Defendant appeals his conviction, following a trial by jury, of two violations of 23 V.S.A., chapter 13, subchapter 13: operating a motor vehicle while he was under the influence of intoxicating liquor, 23 V.S.A. § 1201(a)(2), with death resulting, 23 V.S.A. § 1210(e) (DUI/Fatal), and, secondly, operating a motor vehicle “in a careless or negligent manner” with death resulting. 23 V.S.A. § 1091(c). We affirm.
The appeal raises three issues for our review. Defendant first claims that his right to be heard (testify) on his own behalf under Chapter I, Article 10 of the Vermont Constitution was chilled by certain statements of the trial judge. Second, he contends that *401 the trial judge gave an erroneous instruction to the jury on the element of proximate cause. Finally, he argues that his right to a speedy trial was violated by substantial delays not attributable to him.
Viewing the record evidence in the light most favorable to the State as the prevailing party, and excluding the effect of any modifying evidence,
State
v.
Robillard,
The defense sought to establish that the firetruck was forced off the road as a result of the negligent driving of another motorist in an oncoming car. The jury, however, found the defendant guilty as charged; judgment was entered on the verdict and this appeal was timely filed. We consider the issues seriatim in the order presented.
I.
At the conclusion of an earlier interlocutory appeal by the State in the case now before us on its merits, this Court affirmed a ruling by the trial court suppressing the results of a blood-alcohol test to which defendant had submitted.
State
v.
Yudichak,
Defendant now claims that certain advisory statements made on the record (but not before the jury) by the trial judge improperly chilled his constitutional right to take the stand and be heard in his own defense. The statements related to the suppressed results of the blood test, and allegedly were to the effect that the federal rules established in
Harris
v.
New York,
Defendant’s claim is raised under Chapter I, Article 10 of the Vermont Constitution. Defendant would have us apply the
*402
Vermont standard, used to protect the right of the defendant to testify in his own behalf, which proscribes the use of the more permissive federal rule established in
Havens.
See, e.g.,
State
v.
Brunette,
The rules developed by the
Harris
and
Havens
decisions provide prosecutors with latitude in the use of otherwise suppressed evidence, for the purpose of impeaching a defendant if he testifies contrary to the suppressed matter. To the extent that the federal standard in
Harris
applies to testimony of a defendant on direct examination, it will also apply in Vermont, and does not violate the Vermont Constitution.
State
v.
Brunette,
II.
Whether the jury was properly charged on the element of proximate cause is also before us on appeal. At trial defendant argued that another driver in an oncoming vehicle forced the firetruck off the highway. Defendant contends that the jury instruction given by the judge reflected a civil proximate cause standard and would result in a conviction regardless of an intervening cause of the accident. We do not agree.
This Court has not previously defined the element of causation to be used in cases of DUI/Fatal or careless or negligent driving with death resulting. As in all other criminal offenses, the common law standard of direct causation applies. Thus, while manslaughter and DUI/Fatal do not necessarily contain the same ele
*403
merits,
State
v.
Poirier,
Vermont has consistently applied a direct causation standard in criminal offenses. One cannot be convicted of manslaughter in the presence of an intervening cause of death, unless that intervening cause is found to be a natural result of one’s acts. See
State
v.
Rounds,
An “efficient intervening cause” of death, see
Rounds,
After careful consideration of the instruction as a whole, see
State
v.
Chambers,
[I]f you also conclude that there was an independent intervening cause or independent efficient intervening cause . . . that actually caused the accident, you must find the Defendant not guilty, even though you’re satisfied that he was operating either under the influence or in a careless and negligent manner. . . . [T]here is evidence in the case and argument to the effect that some other driver’s conduct caused the accident or occurrence . . . that resulted in the truck rolling over that caused the death of three persons. If you find that such another driver was aware of the existence of a potential danger created by Mr. Yudichak, and that thereafter that other driver negligently or unlawfully brought about this accident, then you must find that Mr. Yudichak did not *404 cause the accident or the occurrence, as the case may be, and that he’s not guilty of driving while under the influence, or careless and negligent operation with death resulting.
This instruction required direct causal connection between the unlawful acts of defendant and the firetruck rolling over. It also clearly stated that no guilty verdict may be issued where the course of events is initiated or interrupted through the actions of another driver, whether or not defendant was driving unlawfully. We conclude that the instruction constituted a “charge fully and correctly upon each point indicated by the evidence, material to a decision of the case . . . .”
State
v.
Drown,
III.
Finally, defendant seeks review of the trial court’s denial of his motion to dismiss, based on an alleged violation of his Sixth Amendment right to a speedy trial under the United States Constitution and the comparable clause of the Vermont Constitution, Chapter I, Article 10. Defendant does not, however, indicate whether there is any difference between these rights. In the past, speedy trial rights have been treated as the same under either constitution. However, the differences have not been “squarely and throughly decided.”
State
v.
Dean,
“[F]our factors . . . are relevant in determining when such a denial has occurred: the length of the delay, the reason for the delay, defendant’s assertion of his or her right, and prejudice to
*405
the defendant.”
State
v.
Recor,
“Although the first factor to consider, length of delay, is not dispositive of the constitutional question, ... as a threshold matter this Court demands an accurate determination of the time elapsed.”
State
v.
Williams,
Excluded from the computation of time, however, are delays attributable to pretrial motions made by the defense.
State
v.
Williams,
The fourth factor, and the most important, is whether defendant has been prejudiced as a result of delay.
State
v.
Bristol,
Pretrial incarceration is not at issue here. Defendant was released on his own recognizance, and completed his college educa
*406
tion during the pending litigation. Defendant does argue that the delay at trial caused him undue personal anxiety including the stigma of being an accused felon and the burden added by press coverage of the unfortunate accident. Standing alone, such burden does not constitute prejudice sufficient to dismiss the charges against him.
Recor,
Defendant contends that his ability to prepare an adequate defense to the charges was impeded by the delay. He cites three examples of witnesses whose testimony was useless to defense allegedly as a result of the delay. One, a witness for the State, died prior to trial, and a statement taken from him was ruled inadmissible as hearsay evidence. Two other witnesses allegedly suffered impaired recall of the details surrounding the accident. In reviewing the lapses in testimony cited by defendant, it is not evident that the witnesses could have testified to the facts allegedly forgotten or even that the witnesses, had they remembered details desired by defendant, would have strengthened the defense.
Therefore, while there was some delay present, defendant has not shown prejudice to his case. In considering the remaining two factors relevant to a denial of a speedy trial motion, we find no support for defendant’s claims. Given the importance of the issue considered and the State’s reasonable diligence in adhering to procedural rules, no bad faith can be attributed to the State in raising the interlocutory appeal. See
United States
v.
Loud Hawk,
There is delay here which is directly attributable to the court system. Such delay is weighed against the State, not defendant.
Barker,
Affirmed.
On Motion For Reargument
Appellant’s motion to reargue under V.R.A.P. 40 is denied. The motion does not state points of law or fact, overlooked or misapprehended by the Court, which would affect the result. We have, however, recalled the opinion and redrafted certain portions, primarily to clarify our discussion of defendant-appellant’s speedy trial argument. The revisions do not change the result.
Motion for reargument denied.
Notes
We have previously “decline[d] to adopt, for purposes of appeals, the four pronged test applicable to pretrial level delays set forth ... in
Barker
. . . .”
State
v.
Hall,
