OPINION ON REHEARING
Upon consideration of the motion for rehearing filed by appellees Patricia Lim-mer, Billye Joyce Smith, and Bobbye Jean Nothnagel (collectively referred to herein as the “Limmers”) and the responses thereto, we conclude that the trial court did not err in ruling against appellant Missouri Pacific Railroad Company d/b/a Union Pacific Railroad Company (“Union Pacific”) as to its preemption defense. Accordingly, we grant the Limmers’ motion for rehearing to this extent, deny the remainder of the Limmers’ motion for rehearing, withdraw the opinions issued in this case on October 5, 2004, and issue the following opinion in their place.
In this wrongful-death action arising from a collision between decedent Billy Limmer’s truck and a train at a railroad crossing, this court must determine whether the trial court erred in rejecting Union Pacific’s defense that federal law preempts the Limmers’ negligence claims. We conclude the trial court did not err in rejecting Union Pacific’s preemption defense because there is legally and factually *807 sufficient evidence to support the trial court’s implied finding that Union Pacific failed to prove federal funds were used to install warning devices at the railroad crossing in question. We further conclude the trial court reversibly erred in submitting to the jury the Limmers’ negligence claim based on Union Pacific’s alleged failure to eliminate sight restrictions along its right-of-way because Texas law does not recognize this clаim. Accordingly, we reverse the trial court’s judgment and remand this case to the trial court for a new trial consistent with this opinion.
I.Factual and PROCEDURAL Background
On April 24, 1994, a train struck and killed Billy Limmer when he attempted to cross railroad tracks 1 at the Front Street grade crossing in Thorndale, Texas (“Front Street Crossing”). When this accident occurred, Georgetown Railroad Company owned this train, and Southern Pacific Railroad Company (“Southern Pacific”) operated it. Furthermore, at the time of this accident, Union Pacific owned the railroad tracks in question. At the time of the accident, the Front Street Crossing did not have automatic warning devices, which activate when a train approaches the crossing; rather, it had passive warning devices, including what are referred to as “crossbuck” signs — the familiar, white, X-shaped signs with black letters spelling out, “RAILROAD CROSSING.” There was testimony at trial that trees and vegetation in the area of the crossing obscured visibility along the tracks at the time of the accident. Also, further down the track, there was a pile of crushed limestone to be used for construction work.
Billy Limmer’s heirs, the Limmers, sued Union Pacific for negligence. The jury found that the Front Street Crossing was “extra-hazardous” (Question l), 2 that Union Pacific’s negligence in fading to provide automatic signals, a flag man, “and/or” a stop sign was a proximate cause of the collision (Question 2), 3 and that Union Pacific’s negligence in failing to eliminate sight restrictions caused by the limestone pile “and/or” the vеgetation was a proximate cause of the collision (Question 3). 4 The jury found that Billy Limmer’s negligence was also a proximate cause of the *808 accident, and it assigned proportionate responsibility for the collision at eighty-five percent to Union Pacific and fifteen percent to Billy Limmer. The jury returned separate compensatory damage awards for each of the Limmers. In its judgment, the trial court applied the proportionate-responsibility percentage to the jury’s damage findings and awarded the Limmers a total amount of $8,733,458.70 plus post-judgment interest.
II. Issues PResented
On appeal, Union Pacific presents the following issues for review:
(1) Did the trial court err in rejecting Union Pacific’s preemption defense because Union Pacific conclusively proved as a matter of law that federal funds were expended to install warning devices at the Front Street Crossing, or, alternatively, is the trial court’s implied finding that this did not occur against the great weight and preponderance of the evidence?
(2) Did the trial court reversibly err by submitting Union Pacific’s alleged failure to eliminate sight restrictions as an independent basis of liability?
(3) Did the trial court err by refusing to instruct the jury as to the statutory duty of care owed concerning visual obstructions at public grade crossings?
(4)Did the trial court err in awarding prejudgment and postjudgment interest based on delays that were not Union Pacific’s fault?
III. STANDARDS OF REVIEW
In the trial court, Union Pacific asserted the affirmative defense that certain federal regulations preempt all of the Limmers’ claims in this case because federal funds were expended to install warning devices at the Front Street Crossing. Before we can determine the proper standard of review regarding this issue, we must determine whether it was tried to the bench or to the jury. The record is silent as to whether the parties agreed that this preemption issue would be tried to the bench rather than to the jury. Although the Limmers demanded a jury trial and paid the jury fee, the jury never heard any of the evidence or argument on the fact issue of whether federal funds were expended to install warning devices at the Front Street Crossing. The trial court admitted the documentary evidence regarding this issue for the court only, and the trial court heard the testimony on this issue outside the presence of the jury during the trial. The trial court did not mention this fact issue in the jury charge. The trial court stated several times that it, rather than the jury, would determine the preemption issue.
5
No party objected to this procedure or indicated to the trial court that it was standing on its right to a jury trial.
6
On appeal, the Limmers do
*809
not assert that this preemption issue had to be tried to the jury or that Union Pacific waived its preemption defense by not having its preemption proof admitted in evidence before the jury. On this record, we conclude Union Pacific and the Limmers waived any right they had to have the jury decide whether federal funds were expended to install warning devices at the Front Street Crossing.
See Massey v. Galvan,
Although the trial court filed no findings of fact or conclusions of law regarding the preemption issue, on appeal, we presume the trial court made all findings in favor of its judgment.
See Pharo v. Chambers Cty.,
In its first issue, Union Pacific attacks the legal sufficiency and factually sufficiency of the evidence to support the trial court’s implied finding that Union Pacific failed to prove federal funds were expended to install warning devices at the Front Street Crossing. This finding relates to Union Pacific’s preemption defense, an issue on which Union Pacific had the burden of proof. Therefore, for Union Pacific to succeed in its legal-sufficiency challenge, we must conclude that Union Pacific conclusively proved its preemption defense as a matter of law.
See Dow Chemical Co. v. Francis,
As to Union Pacific’s factual-sufficiency challenge, we examine the entire record, considering both the evidence in favor of, and contrary to, the challenged finding.
Cain v. Bain,
Union Pacific argues this court should review the trial court’s rejection of its preemption arguments completely under a de novo standard of review because it claims preemption affects the trial court’s subject matter jurisdiction. Under the federal system, once a state establishes certain courts as courts of general jurisdiction — such as the district court below — it is presumed that these courts have the power to adjudicate claims under federal statutes unless otherwise provided by state or federal law.
7
See
U.S. Const, art. VI, cl. 2; Tex. Const, art. V, § 8; Tex. Gov’t Code §§ 24.007, 24.008;
Howlett v. Rose,
Ordinarily, preemption operates as an affirmative defense to a claimant’s state law claims but does not deprive state courts of jurisdiction over those claims.
Mills v. Warner Lambert Co.,
IY. Analysis
A. Is the evidence legally and factually sufficient to support the trial court’s implied finding that Union Pacific failed to prove federal funds were expended to install warning devices at the Front Street Crossing under the 1977 Program?
In its first issue, Union Pacific asserts the evidence is legally and factually insufficient to support the trial court’s implied finding that federal regulations concerning warning devices at public grade crossings do not preempt the Limmers’ state law claims.
See Norfolk S. Ry. Co. v. Shanklin,
Under the Supremacy Clause of the United States Constitution, federal law preempts state law when it conflicts with or frustrates federal law. U.S. Const. art. VI, cl. 2;
CSX Transp., Inc. v. Easterwood,
In 1970, Congress passed the Federal Railroad Safety Act for the purpose of promoting “safety in every area of railroad operations and [to] reduce railroad-related accidents.” 49 U.S.C. § 20101 (1997). 8 This statute authorizes the Secretary of Transportation to implement regulations regarding railroad safety. See id. § 20103(a) (Supp.2003). It also contains an express preemption clause:
Laws, regulations, and orders related to railroad safety ... shall be nationally uniform to the extent practicable. A State may adopt or continue in force a law, regulatiоn, or order related to railroad safety ... until the Secretary of Transportation ... prescribes a regulation or issues an order covering the subject matter of the State requirement. A State may adopt or continue in force an additional or more stringent law, regulation, or order related to railroad safety ... when the law, regulation or order—
(1) is necessary to eliminate or reduce an essentially local safety ... hazard;
(2) is not incompatible with a law, regulation or order of the United States Government; and
(3) does not unreasonably burden interstate commerce.
Id. § 20106 (1997 & Supp.2003).
In 1973, Congress passed the Highway Safety Act, which created the Federal *812 Highway Crossings Program and made funds available to states for the “construction of projects for the elimination of hazards of railway-highway crossings.” 23 U.S.C. § 130(a) (2002). To participate in the program, states were required to “conduct and systematically maintain a survey of all highways to identify those railroad crossings which may require separation, relocation, or protective devices, and establish and implement a schedule of projects for this purpose.” Id. § 130(d). The projects had to include, at a minimum, signs for all railway crossings. Id. The Secretary of Transportation, through the Federal Highway Administration, promulgated various regulations implementing the crossings program. The rules found at 23 C.F.R. § 646.214(b) (1999) specifically address the design of grade crossing improvements, and subsections (3) and (4) of that provision address the adequacy of warning devices installed under thе crossings program.
In
Easterwood,
the United States Supreme Court held that, when sections 646.214(b)(3) and (4) apply, federal law preempts state tort law.
See Easterwood,
In
Shanklin,
the Court held that the applicability of these regulations to any given railroad crossing does not depend on “an individualized determination of adequacy” by a diagnostic team or federal officials; rather, the regulations apply to all crossings at which warning devices are installed using federal funds.
See Shanklin,
Union Pacific asserts there is legally and factually insufficient evidence to support this finding. The evidence before the trial court relevant to this issue consists of testimony from Wayne Heathington, Douglas Woods, and Darin Kosmak.
The trial court admitted in evidence (before the court only) an affidavit of Darin Kosmak, the Railroad Liaison Manager in the Traffiс Operations Division of the Texas Department of Transportation (the “Department”). In this affidavit, Kosmak testifies as follows:
[Kosmak] ... by virtue of [his] position at the [Department] [is] personally familiar with the matters stated [in his affidavit]....
In 1977 the [Department] implemented a program to improve all unsignalized public grade crossings in Texas. Between 1977 and 1981 the State of Texas received Federal Highway Funding in order to implement this program.
Pursuant to Section 203 of the Federal-Aid Highway Act of 1976, all crossbuck protected crossings on the Missouri Pacific Railroad Company’s road crossing received the benefit of Federal Funds between approximately 1977 and 1981. These funds were expensed to either install or upgrade crossing protection at all crossbuck-protected crossings to consisted [sic] of two (2) reflectorized cross-bucks. As evidenced by the attached Exhibit Pages Nos. 1-2, The Missouri Pacific Railroad Company agreed to par *813 ticipate in this program. As evidenced by Exhibit Page No. 3, the letting date for the contract to install metal cross-buck poles and signs for District 17, which inelude[s] [the Front Street Crossing] was December 1977. The contract price, which was a 100% Federally-funded project, for District 17 was $395,069.26.
Under this program, the Secretary of Transportation determined the type of warning devices to be installed at [the Front Street Crossing]; determined [sic] the means by which The Missouri Pacific Railroad Company participated in the selection; and also allocated Federal Funds [sic] for said installation.
Darin Kosmak testified before the court as follows:
• It is Kosmak’s understanding that certain documents relating to the 1977 Program that were kept by the State of Texas have been discarded, before Kosmak’s employment with the Texas Department of Transportation. Kos-mak assumes this occurred in the 1980s.
• Kosmak has attached to his affidavit the documents that he does have in connection with the 1977 Program.
In deposition testimony admitted before the court, Darin Kosmak testified as follows:
• Kosmak cannot not say how much money, if any, was actually spent on putting crossbucks or poles or signs or replacing crossbucks or poles or signs under the 1977 Program at the Front Street Crossing. Kosmak’s affidavit does not contain any evidence specific to the Front Street Crossing regarding the expenditure of federal or state funds on that crossing under the 1977 Program. Kosmak does not know how much federal or state money, if any, was spent at the Front Street Crossing as a result of the 1977 Program.
• It was the State of Texas that made the decision to do whatever was done at the Front Street Crossing as a result of the 1977 Program, if anything.
• Kosmak does not know whether anything actually occurred at the Front Street Crossing as a result of the 1977 Program.
• Under the 1977 Program, the State of Texas would have the work done and then the federal government would reimburse the State.
Wayne Heathington, an expert retained by the Limmers, testified before the court as follows:
• As Heаthington understands it, Darin Kosmak of the Texas Department of Transportation did not confirm, based on his own personal knowledge, whether federal funds had been spent to install any type of crossbuck warning device at the Front Street Crossing before Billy Limmer’s fatal collision.
• The 1977 Program was federally funded and approved by the Federal Highway Administration.
• Based on his examination of a photograph of the crossbuck signs at the Front Street Crossing, Heathington believes that the crossbuck signs either were never put in under the 1977 Program or were put in under the 1977 Program but not maintained.
Douglas Woods testified before the court as follows:
• He has seen the metal reflectorized crossbuck blades that have been used under the 1977 Program.
• The crossbuck blades shown in a picture of the Front Street Crossing ap *814 pear to Woods to be the same type of blades. The crossbuck blades shown in a picture of the Front Street Crossing look the same as ones that Woods has seen before.
• Woods is not aware of any Union Pacific program to put in metal reflec-torized crossbuck blades.
A December 21, 1976 letter from the Department to Missouri Pacific Railroad Company (hereinafter “Missouri Pacific”) states as follows:
[The Department is] developing a project [the 1977 Program] in cooperation with the Federal Highway Administration utilizing Safety Funds under section 203 of the Federal-Aid Highway Act of 1976 to install passive warning devices at all public road crossings of all railway lines in the State of Texas. This project is designed to bring each crossing up to the minimum standard as specified in the Manual on Uniform Traffic Control Devices.
Generally, the work performed on your right of way will be the installation or upgrading of refleetorized crossbuck and number-of-track signs and placement of pavement markings and stop lines on the pavement surface, part of which may be on your right of way ... We propose to utilize all of the existing crossbuck signs and mountings as appropriate. Where new material is installed the State will salvage and dispose of the existing signs, without credit to your company.
[[Image here]]
By signing and returning one copy of this letter, you grant your company’s permission for the State or its Agent to perform the work herein described as may be necessary to provide a minimum passive warning system at public highway or road crossings on your rail system in Texas.
Union Pacific asserts it conclusively proved that federal funds were expended to install warning devices at the Front Street Crossing under the 1977 Program. Union Pacific bases this assertion on the following evidence: (1) Kosmak’s affidavit and portions of Kosmak’s deposition testimony; (2) the December 21, 1976 letter, (3) Woods’s testimony before the trial court; (4) Heathington’s testimony to the bench.
Kosmak was not involved in the 1977 Program, and he testified at his deposition that he does not know whether anything actually occurred at the Front Street Crossing as a result of the 1977 Program or whether any federal or state money was spent at the Front Strеet Crossing under the 1977 Program. 9
*815 Although the first sentence of the 1976 letter could be construed as meaning that the 1977 Program installed passive warning devices at all public road crossings in Texas, it also could reasonably be construed to mean that the 1977 Program only made sure that all public road crossings in Texas had sufficient passive warning devices. This latter interpretation is supported by the second sentence which indicates that the goal of the 1977 Program was for each crossing to conform to the minimum standard specified in the Manual on Uniform Traffic Control Devices (hereinafter the “Manual”). The letter states that, generally, reflectorized crossbucks will be installed or upgraded. The letter, however, also says that existing crossbuck signs and mountings will be used, as appropriate. The letter states that, “[w]here new material is installed the State will salvage and dispose of the existing signs,” indicating that new material will not necessarily be installed at each crossing. Finally, by signing the letter, Missouri Pacific gave its “permission for the State or its Agent to perform the work herein described as may be necessary.” This sentence indicates that work may not be necessary at each crossing.
Union Pacific also relies on Heathing-ton’s testimony that (1) the front of the crossbuck signs under the 1977 Program were reflectorized, like the crossbuck signs at the Front Street Crossing; (2) the 1977 Program was federally funded; and (3) federal funds were spent on the Front Street Crossing if the reflectorized сross-buck signs at that crossing were installed under the 1977 Program. This testimony does not address the issue at hand— whether federal funds were expended under the 1977 Program to install warning devices at the Front Street Crossing. Furthermore, Heathington also testified that, based on his examination of a photograph of the crossbuck signs at the Front Street Crossing, Heathington believes that the crossbuck signs at the Front Street Crossing either were never put in under the 1977 Program or were put in under the 1977 Program but not maintained.
Woods, Union Pacific’s Manager of Industries and Public Projects and a longtime Union Pacific employee, did testify that the crossbuck signs shown in a picture of the Front Street Crossing appear to Woods to be the same type of signs as those that were used under the 1977 Program.
10
But, Woods was an interested witness. Testimony from interested witnesses may establish a fact as a matter of law only if the testimony could be readily contradicted if untrue, and is clear, direct, and positive, and there are no circumstances tending to discredit or impeach it.
See Lofton v. Texas Brine Corp., 777
S.W.2d 384, 386 (Tex.1989);
see also City of Keller v. Wilson,
Furthermore, there . are circumstances tending to discredit or impeach Woods’s testimony. On the same day that he gave the testimony relied on by Union Pacific, Woods testified in front of the trial court and the jury that, in all his time with Union Pacific and in all his time as a driver, having driven in at least eighteen states, he has never seen a railroad crossing that he considered extrahazardous. Woods also testified that he had never seen a crossing that needed to have lights and gates not to be extrahazardous. Woods stated that in all his travels, both working for Union Pacific and personally as a motorist, he has never on any occasion ever seen a public grade crossing that had only crossbuck signs that he believed required the installation of automatic lights and gates to make the crossing safe enough for an ordinarily prudent person to cross it safely. On the previous day, Woods testified that he had been involved in between four hundred and five hundred upgrades of warning systems at Union Pacific crossings. Woods also testified that automatic lights and gates at railroad crossings do not provide additional protection for motorists against having a train/motor vehicle collision. 11 Presuming for the sake of argument that Woods’s testimony regarding the 1977 Program was uncontroverted, 12 it still does not satisfy the standard required for interested-witness testimony to be conclusive, and reasonable people could differ in their conclusions based on it. See Lofton, 777 S.W.2d at 386-87 (holding that testimony by interested witness did not establish fact as a matter of law because of circumstances tending to impeach it); Gevinson v. Manhattan Const. Co. of Ok., 449, S.W.2d 458, 467-68 (Tex.1969) (holding testimony from interested witness did not conclusively prove reliance because there were circumstances tending to discredit or impeach that testimony).
After carefully reviewing the record under the applicable standard of review, we conclude Union Pacific did not conclusively prove that federal funds were expended to install warning devices at the Front Street Crossing under the 1977 Program.
13
See
*817
Duncan v. Kansas City S. Ry. Co.,
B. Did the trial court err in impliedly rejecting Union Pacific’s preemption defense as to the 1989 Program because adding retroreflectorized tape to the back of crossbuck signs and their supporting pole does not constitute the installation of a warning device?
The two poles that bear the cross-buck signs at the Front Street Crossing each have a band of retroreflectorized tape affixed to the pole beneath the sign, and the back sides of the crossbuck signs themselves, which contain no words or warnings, have retroreflectorized tape attached to them (we refer collectively to this tape hereinafter as the “Tape”). Union Pacific asserts it conclusively proved that federal funds were expended to install the Tape and that the Tape constitutes a warning device. In the alternative, Union Pacific asserts there is factually insufficient evidence to support the trial court’s implied findings to the contrary. The Limmers assert that legally and factually sufficient evidence supports these implied findings. The Limmers also assert that suffiсient evidence supports the trial court’s implied finding that the Tape was not installed during the 1989 Program. However, for the purposes of this analysis, we presume without deciding that the Tape was installed at the Front Street Crossing under the 1989 Program and that federal funds were expended on this installation. 14
As part of its burden of proving its preemption defense, Union Pacific had to
*818
show that the Tape is a warning device.
See
23 C.F.R. § 646.214(b);
Shanklin,
Active Warning Devices means those traffic control devices activated by the approach or presence of a train, such as flashing light signals, automatic gates and similar devices, as well as manually operated devices and crossing watchmen, all of which display to motorists positive warning of the approach or presence of a train.
Passive Warning Devices means those types of traffic control devices, including signs, markings and other devices, located at or in advance of grade crossings to indicate the presence of a crossing but which do not change aspect upon the approach or presence of a train.
23 C.F.R. § 646.204;
see Easterwood,
To qualify as a passive warning device, the Tape must be a “traffic control device[ ] ... located at or in advance of [the Front Street Crossing] to indicate the presence of a crossing.”
See
23 C.F.R. § 646.204. The definition of warning device is a matter of law that has been established under precedent from the United States Supreme Court. One might therefore conclude we should determine, as a matter of law, whether
any
retrore-flectorized tape could be a warning device under this definition or whether retrore-flectorized tape installed in the 1989 Program can be such a warning device. Based on the legal definition that we must apply and based on the information that we have in the record before us regarding the Tape and the 1989 Program, we conclude that we are not in a position to determine these broader issues. Therefore, we limit our analysis to the particular tape affixed to the crossbuck signs and supporting poles at the Front Street Crossing.
15
Under the applicable legal standard, this Tape must (1) be a traffic control device, and (2) indicate the presence of a railroad crossing.
See Easterwood,
*819 • Heathington is familiar with the 1989 Program to add retroreflectorized tape to crossbuck signs to increase visibility at night. 16
• The United States Department of Transportation publishes the Manual. Nowhere in the Manual does it list or classify or describe retroreflectorized tape as a traffic control device.
• The Manual states that it presents traffic control device standards for all streets and highways open to public travel regardless of the type or class or the governmental agency having jurisdiction.
• Nowhere in the Manual does it define retroreflectorized tape as a traffic control device.
• A traffic control device has to provide information or tell the motorist something to do. The Tape reflects light so something becomes more visible and more easily seen, but the Tape has nothing to do with telling motorists to stop, to look, to observe, to turn right or to not turn right or anything of that nature. The Tape does not serve the function of a traffic control device.
• Heathington contacted the Federal Highway Administration and asked who was in charge of the Manual committee and he was told the person was Shelley Row. He then sent a letter to Ms. Row asking if the use of retrore-flectorized tape on traffic sign posts and on the back of crossbuck signs is considered a traffic control device. Ms. Row responded by writing a letter as Director of the Office of Transportation Operations for the Federal Highway Administration. In this letter, Ms. Row stated that retroreflec-torized tape is not considered a traffic control device.
• In enacting House Bill 2681 in 1989 (a copy of which is contained in Plaintiffs’ Exhibit 110), the Texas Legislature defined an active warning device or crossbucks differently than retrore-flectorized tape. The Texas Legislature made a distinction between retro-reflectorized material and an active warning device or a crossbuck. 17
• Heathington’s opinion that retrore-flectorized tape cannot be considered a traffic control device is supported by House Bill 2681, which states that the State Department of Highways and Public Transportation “shall develop guidelines and specifications for the installation and maintenance of retro-reflectorized material at all public grade crossings not protected by active warning devices.”
• H.B. 2681 defines retroreflectorized tape separately from “warning device.” Retroreflectorized tape is not considered to be a warning device. H.B. 2681 defines “Retroreflectorized material” as “material that reflects light so that the paths of the reflected light rays are parallel to those of the incident rays.” H.B. 2681 defines “Active warning device” as “a bell, flashing light, gate, wigwag, or other *820 automatically activated warning device.” H.B. 2681 defines “Warning device” as “an active warning device, crossbuck, or other a traffic control sign, the purpose of which is to alert motorists of a grade crossing.”
• Heathington’s opinion is also supported by article 6370b of the Texas Revised Civil Statutes, which was admitted before the trial court and which codifies H.B. 2861.
Union Pacific has not cited any evidence that it introduced as to this issue, and we have found none.
1. Is the evidence sufficient to support the trial court’s implied finding that Union Pacific failed to prove that the Tape is a traffic control device?
Under the applicable legal standard, to be a warning device, the Tape must be a traffic control device. See id. The regulations at issue do not define what a traffic control device is; however, they require that all traffic control devices comply with the latest edition of the Manual. The Manual states that the purpose of “traffic control devices” is “to help insure highway safety by providing for the orderly and predictable movement of all traffic ... throughout the national highway transportation system, and to provide such guidance and warnings as are needed to insure the safe and informed operation of individual elements of the traffic stream.”
The evidence from Heathington, which we presume the trial court credited, showed that the Tape is designed to make the crossbuck signs more easily visible to motorists at night and that it is not designed to control traffic. We have found no published cases dealing with the issue of whether the addition of retroreflector-ized tape constitutes the installation of a warning device. 18 Furthermore, we note the conceptual difficulty of analyzing the function of the installed item — the Tape— apart from the warning device to which it was affixed — the crossbuck signs. 19 While a crossbuck sign with retroreflectorized tape would be a traffic control device, the 1989 Program did not involve the installation of crossbuck signs. The testimony of Heathington and the photographs of the Tape in the record show that, although the Tape may increase the nighttime visibility of the crossbuck signs to which it is attached, the Tape, by itself, does not provide guidance or warnings to motorists. After carefully reviewing the record under the applicable standard of review, we conclude Union Pacific did not conclusively prove that the Tape is a traffic control device. See Enriquez v. Union Pac. R. Co., No. 5.-03CV174, p. 23-25 (E.D.Tex. Dec. 30, 2004) (holding by Judge Folsom that Union Pacific did not prove its entitlement to summary judgment, in part, because evidence did not conclusively prove that installation of retroreflectorized tape in 1989 Program was the installation of a traffic control device or of a warning device) (not designated for publication); Lesly v. Union Pac. R. Co., No. H-03-0772, U.S. Dist. LEXIS 23018, at *11-12 (June *821 25, 2004) (holding by Judge Lake that Union Pacific did not prove its entitlement to summary judgment, in part, because evidence did not conclusively prove that installation of retroreflectorized tape in 1989 Program was the installation of a warning device) (not designated for publication). Applying the factual-sufficiency standard of review, we conclude that the evidence is factually sufficient to support the trial court’s implied finding that Union Pacific failed to prove that the Tape is a traffic control device.
2. Is the evidence sufficient to support the trial court’s implied finding that Union Pacific failed to prove that the Tape indicates the presence of a railroad crossing?
In holding that evidence did not show that motion-detection circuitry intended to be used with an automatic gate at a railroad crossing was a warning device, the United States Supreme Court emphasized that, to meet the applicable definition of warning device, the installed item must indicate the presence of a railroad crossing.
See Easterwood,
Because sufficient evidence supports the trial court’s implied findings that Union Pacific did not prove that the Tape is a traffic control device and that the Tape indicates the presence of a railroad crossing, we conclude the trial court did not err in rejecting Union Pacific’s preemption defense based on the 1989 Program.
20
See Shanklin,
C. Does Union Pacific’s alleged negligence in failing to eliminate sight restrictions constitute an independent basis of liability?
In its second issue, Union Pacific argues that, even if federal law does not preempt the Limmers’ negligence claim in Question 3, its alleged negligence in failing to eliminate sight restrictions cannot be an independent basis of liability.
See supra
*822
note 4. The Limmers assert that Union Pacific tañed to preserve error as to its second issue because it did not object to the jury question regarding apportionment of responsibüity. The trial court overruled Union Pacific’s objection that Question 3 is not an independent basis of liabñity. In an analogous situation (separate liabñity questions but a combined apportionment question), the Texas Supreme Court recently stated that it did not have to address whether the objecting party also had to object to the apportionment question to preserve error.
See Romero v. KPH Consol, Inc.,
Union Pacific had to, and did, object to the trial court’s submission of Question 3.
See In re A.V.,
In
Romero,
the trial court properly submitted one liability theory to the jury, erroneously submitted another liability theory to the jury in a separate question, and the jury answered both liability questions in the affirmative.
See Romero,
To resolve the merits of Union Pacific’s second issue, a review of a line of Texas Supreme Court cases from the late nineteenth century is essential. First, the Texas Supreme Court held several times that the failure of a railroad company to eliminate sight restrictions along its right-of-way does not necessarily constitute negligence, but that such a failure may serve as an independent basis of liability, if the fact finder determines it to be negligence after considering all the facts and circumstances.
See Galveston, H. & S.A. Ry. Co. v. Michalke,
The Texas Supreme Court again visited this topic in the
Rogers
case, in which it held the trial court erred in instructing the jury that any failure of the railroаd company to eliminate sight restrictions would necessarily constitute negligence.
See Missouri, K. & T. Ry. Co. of Texas v. Rogers,
*824
While, on the whole, the Rogers court seems to conclude that sight restrictions are not an independent basis of liability, there is some language in the opinion that might cloud the issue. See id. at 957-58. After stating that a railroad company’s failure to eliminate sight rеstrictions does not necessarily constitute negligence, the Rogers court notes that it is a question of fact for the jury whether, under the circumstances, the restriction constitutes negligence and whether, under the conditions existing at the time, the railroad company exercised due care in the operation of its train. See id. While this statement may indicate that sight restrictions are to be considered in determining the train operator’s negligence, if any, in operating the train, the statement may indicate to some that sight restrictions can constitute an independent basis of liability. 23
One year later in the
Knight
case, the Texas Supreme Court dispelled any confusion as to the meaning of its opinion in
Rogers. See Int’l & G.N. Ry. Co. v. Knight,
The Texas Supreme Court has not revisited this issue in the 107 years since it decided
Knight;
however, lower courts applying
Knight
have held that plaintiffs should take nothing if their only viable basis for negligence liability against a railroad company is an alleged failure to eliminate sight restrictions, because such a failure is not an independent basis of liability.
See Atchison, Topeka & Santa Fe Ry. Co. v. Rubrecht,
These courts are correct that under
Rogers
and
Knight,
the Texas Supreme Court has declared that the failure to eliminate sight restrictions is not an independent basis of liability. As an intermediate court of appeals, this court is bound to follow established precedent from the Texas Supreme Court. Consideration of any changes to common-law rules must be left to that higher authority.
Lubbock County, Tex. v. Trammel’s Lubbock Bail Bonds,
The Limmers argue that Knight and Rogers do not apply to the facts before us because Union Pacific did not operate the train, it merely owned the right-of-way. In Rogers and Knight, and those cases cited thus far regarding sight restrictions, the train operator also ownеd the right-of-way. As a matter of logic, if, as to sight restrictions, a right-of-way owner is not subject to liability as a right-of-way owner for accidents in which it operates the train, then there is no apparent reason that an owner should be subject to liability in its capacity as owner of the same right-of-way for accidents in which another company operates the train. Presuming that the Limmers timely sued Southern Pacific— the operator of the train — and that the Limmers have claims that are not preempted by federal law, under Rogers and Knight, they would be free to seek a determination as to whether Southern Pacific negligently operated the train at the time of the accident made the basis of this suit, giving full consideration to the sight restrictions and other conditions at the time of the accident. The fact that different companies operate the train and own the right-of-way does not alter the rationale stated in Rogers and Knight.
Research reveals no Texas case that expressly states
Rogers
and
Knight
do not apply to such circumstances, and the Lim-mers have not cited any authority from any jurisdiction indicating the
Rogers
and
Knight
rule does not apply to such circumstances. Indeed, a court in Alabama— which has the same common-law rule as that stated in
Rogers
and
Knight
— applied that rule to a situation in which the right-of-way owner and train operator were different companies.
See Nat’l Ry. Passenger Corp. v. H & P, Inc.,
The Limmers also attempt to distinguish
Rogers
and
Knight
by arguing they apply only to “economically useful obstructions.” This argument is also unpersuasive. In its analysis, the
Rogers
court cited two vegetation cases from Illinois and the
Cordell
case, which involved a pile of stumps and roots.
See Rogers,
The Limmers cite three Texas cases in support of their argument that
Rogers
and
Knight
apply only to “economically useful obstructions.”
See St. Louis Southwestern Ry. Co. of Tex. v. Larkin,
The only language that supports the Limmers’ argument is more dicta found in the
Larkin
case.
Larkin,
Because the alleged theory of negligence liability submitted in Question 3 is not an independent basis of liability under Texas law, we sustain Union Pacific’s second issue. The trial court’s error is reversible if it “probably prevented the appellant from properly presenting the case to the court of appeals.”
See
Tex.R.App. P. 44.1(a)(2);
Romero,
*829 Conclusion
There is legally and factually sufficient evidence to support the trial court’s implied findings that Union Pacific failed to prove federal funds were expended to install warning devices at the Front Street Crossing under the 1977 Program and under the 1989 Program. Under Texas common law as announced by the Texas Supreme Court and followed by lower courts, Texas does not recognize the negligence claim submitted to the jury in Question 8 as an independent basis of liability. Because we are not reasonably certain that the jury in this case was not significantly influenced by the liability theory that was erroneously submitted in Question 3, we conclude that this error requires reversal of the judgment and a new trial. Accordingly, we sustain Union Pacific’s second issue, reverse the trial court’s judgment, and remand this case to the trial court for a new trial in accordance with this opinion.
Notes
. The tracks had previously been owned by Missouri Pacific Railroad Company, but that company was subsequently acquired by Union Pacific Railroad Company. At the time of the accident, Union Pacific owned the tracks.
. Question 1 defined an extra-hazardous crossing as follows:
A railroad grade crossing is "extra-hazardous” when, because of surrounding conditions, it is so dangerous that person [sic] using ordinary care cannot pass over it in safety without some warning other than the usual cross buck [sic] sign.
. Question 2 was conditioned on an affirmative response to Question 1 and stated as follows:
Was the negligence, if any, of the Missouri Pacific Railroad, through its agents or employees, a proximate cause of the collision in question?
In answering this question, you may consider only the following acts of negligence, if any: (1) failure to provide automatic signals (such as flashing lights or gates); (2) failure to provide a flag man at the Front Street crossing; and/or (3) failure to install a stop sign.
.Question 3 provided as follows:
Was the negligence, if any, of the Missouri Pacific Railroad, through its agents or employees, a proximate cause of the collision in question?
In answering this question, you may consider only the following acts of negligence: (1) failure to eliminate a sight restriction, if any, caused by a pile of crushed limestone at the crossing; and/or (2) failure to eliminate a sight restriction, if any, caused by vegetation at or near the crossing.
. For example, in discussing procedural matters related to the preemption issue, the trial court stated that “[the preemption issue] is an issue that the Court is going to decide and it’s not an issue that goes to the jury....” The trial court also asked counsel, “[I]s [the resolution of the preemption issue] really that different from, let’s say, if they were arguing attorneys fees to me? That’s something that I would be considering, not the jury.”
. At a pretrial conference just before trial, the Limmers agreed to the trial court’s granting Union Pacific a running objection to the evidence at the jury trial, so as to not waive Union Pacific’s argument that federal law preempts all of the Limmers' claims. In the course of discussing this running objection, the trial court told Union Pacific's counsel, "I don't think you should have to stand up and use the word preemption at all during this *809 case.” In response, the Limmers' counsel stated, "That’s fine with me, Judge.”
. Union Pacific cites
Cadillac Insurance Co. v. L.P.C. Distributing Co.,
. All statutory citations are to the current version of the statute, unless otherwise noted.
. Union Pacific asserts that, at his deposition, Kosmak testified to the actual expenditure of federal funds at the Front Street Crossing; however, the cited testimony is vague. When asked whether he could testily under oath specifically as to how much federal money, if any, was actually spent on the Front Street Crossing to upgrade or change the warning devices before Billy Limmer’s death, Kosmak stated that "[t]here were federal funds expended, but I don’t know how much specifically — okay, how many dollars were expended.” Based on other portions of his deposition testimony, the trial court could have determined that Kosmak did not mean that federal funds were expended on the Front Road Crossing but that federal funds were expended generally in the 1977 and/or 1989 Program and Kosmak does not know if any funds were expended on the Front Street Crossing. Even if this testimony had the meaning ascribed to it by Union Pacific, wé presume the trial court credited other parts of Kosmak's deposition testimony, in which Kosmak testifies that he does not know whether anything actually occurred at the Front Street Crossing as a result of the 1977 Program or whether any federal or state money was spent at the Front Street Crossing under the 1977 Program or the 1989
*815
Program.
See City of Keller,
. Union Pacific also emphasizes Woods’s testimоny that he is not aware of any Union Pacific program to put in metal reflectorized crossbuck blades. However, at the time of the 1977 Program, Missouri Pacific owned the Front Street Crossing. Although Union Pacific subsequently acquired Missouri Pacific, if a railroad company installed reflector-ized crossbucks or other passive warning devices at the Front Street Crossing before 1977, it would have been Missouri Pacific or one of its predecessors rather than Union Pacific.
. In his testimony, Woods distinguished between "additional warning” and "additional protection.” Woods stated that automatic lights and gates provide additional warning to motorists and then insisted that this additional warning does not provide additional protection to motorists.
. The Limmers assert that there was contrary evidence based on the 1976 letter and Heathington’s testimony.
. Union Pacific asserts that specific, individualized information is not required for it to have conclusively proven as a matter of law that federal funds were expended to install warning devices at the Front Street Crossing under the 1977 Program. Union Pacific cites several cases in support of this proposition. None of these cases involve an appeal by the railroad company from an adverse finding by the trial court, and none of these cases address the interested-witness rule. Furthermore, the evidence in these cases was significantly different from the evidence in this case.
See O’Bannon v. Union Pac. R. Co.,
. Kosmak testified that it cost $10 to purchase retroreflectorized tape for a railroad crossing like the Front Street Crossing.
. This approach is consistent with the approach taken by United States District Judge Sim Lake in addressing whether retroreflec-torized tape allegedly installed under the 1989 Program constituted a warning deviсe for purposes of the railroad company's preemption defense. See Lesly v. Union Pac. R. Co., No. H-03-0772, U.S. Dist. LEXIS 23018, at *11-12 (S.D. Tex. June 25, 2004).
. The 1989 Texas statute implementing the 1989 Program and the letter in evidence from the United States Department of Transportation regarding this program both use the term "retroreflectorized.” On the other hand, in some of the testimony, witnesses and lawyers use the words "reflectorized” or "retroreflec-tive” instead. For the sake of consistency, we use "retroreflectorized” throughout this opinion.
. See Act of May 17, 1989, 71st Leg., R.S., ch. 269, § 1, 1989 Tex. Gen. Laws 1212, 1213 (formerly codified at Tex.Rev.Civ. Stat. Ann art. 6370b), repealed by Act of May 1, 1995, 74th Leg., R.S., ch. 165, § 24(a), 1995 Tex. Gen. Laws 1025, 1870.
. In
McDaniel v. Southern Pac. Transp.,
the district court mentions the 1989 Program, does not address whether retroreflectorized tape is a warning device, and, in the final analysis, bases its summary judgment on the 1977 Program.
See
. Other than the unpublished
Enriquez
and
Lesly
cases cited below, our research has found only one case addressing whether an addition or enhancement to a preexisting warning device is itself the installation of a warning device.
See St. Louis Southwestern Ry. Co.
v.
Malone Freight Lines, Inc.,
. We only analyze these issues as to the tape in question at the Front Street Crossing, not as to all retroreflectorized tape. It is possible that some retroreflectorized tape might meet the definition of warning device that we apply in this case.
. Even without any deference to the statement in Shelley Row's letter that retroreflec-torized tape is not considered a traffic control device, the evidence is sufficient to support the trial court’s implied finding that the tape in question does not meet the applicable definition of warning device. Therefore, we need not and do not address the issue of the amount of deference, if any, that we should give to this statement.
. For ease of reference, this line of cases is referred to as the "Michalke line of cases.”
. The
Rogers
court also cites the
Dillingham
case for the proposition that it is a fact question for the jury whether sight restrictions constitute negligence by the railroad company.
. Even though some states have determined that the failure to eliminate sight restrictions can be an independent basis of liability,
see,
e.g.,
Alabama Great S. Ry. Co. v. Lee,
. The Supreme Court has held that, in conducting a
Casteel
harm analysis as to charge error, appellate courts treat charge error based on an invalid liability theory the same as charge error based on a liability theory not supported by the evidence.
See Romero,
. Because of our disposition of this case, we need not address Union Pacific’s third and fourth issues or its argument that 49 C.F.R. 213.37(b) preempts the alleged liability submitted to the jury in Question 3.
