¶ 1 Plaintiff Krystal Lowrey and her husband appeal from summary judgment in Lowrey’s suit to recover damages from an elevator maintenance company for injuries that she sustained in an elevator that descended rapidly and abruptly stopped. Concluding that the trial court erred in precluding Lowrey from relying upon res ipsa loquitur to advance her case, we reverse the summary judgment entered against her. We uphold, however, the trial court’s ruling that defendant Montgomery Kone, Inc., an elevator maintenance company, is not susceptible under the common carrier doctrine to a higher-than-ordinary standard of care. In the course of our decision, we join with other courts that have reexamined and abandoned the notion of a common carrier’s higher duty of care in favor of the standard of reasonable care under the circumstances.
I. Background 1
¶ 2 Lowrey, an American Express employee, entered an elevator in the American Express Building to go from the first to the fourth floor. The elevator stopped on the third floor, a passenger stepped out, and the elevator lifted on its way. Soon the fourth floor indicator lit up and the elevator stopped, but the doors did not open. The elevator then shook for two to three seconds, the lights went out, and the elevator dropped. At the second floor, it stopped abruptly and the doors opened. Lowrey suffered a back injury that eventually required surgery.
¶ 3 Lowrey and her husband brought this lawsuit against Montgomery Kone, Inc., among others.
2
But after ruling, upon successive motions for summary judgment, that neither the common carrier doctrine nor
res ipsa loquitur
applied, the trial court dismissed Lowrey’s suit with prejudice.
¶4 In reviewing an order granting summary judgment, we must determine whether a genuine issue of disputed material fact exists and, if not, whether the trial court correctly applied the substantive law.
In re Estate of Johnson,
II. Res Ipsa Loquitur
¶ 5 Defendant’s expert offered the opinion that the elevator incident was caused by a power failure, not by negligence. Although Lowrey’s expert did not offer a counter-explanation of the fall, 3 he did state the opinion that, even in the event of a power failure, a hydraulic elevator should come to a stop in a manner that is not substantially different from a normal stop, and that “an elevator does not function as the elevator in this case did without negligence.” Upon this evidence, we consider whether the trial court erred by precluding Lowrey from relying on res ipsa loquitur to advance her claim.
¶ 6
Res ipsa loquitur
(meaning the thing speaks for itself) is “a rule of circumstantial inference of responsibility for an injury.”
McDonald v. Smitty’s Super Valu, Inc.,
¶ 7 At present, Arizona law holds three elements to be necessary to the application of
res ipsa
loquitur:
4
(1) the accident must be of a kind that ordinarily does not occur in the absence of negligence; (2) the accident must be caused by an agency or instrumentality subject to the control of the defendant;
5
(3) the plaintiff must not be in a position to show the particular circumstances that caused the offending agency or instrumentality to operate to her injury.
6
McDonald,
A. The Likelihood of Negligence
¶8 Montgomery Kone first argues that Lowrey cannot invoke
res ipsa loquitur
because there is a viable, albeit disputed, explanation of the accident that attributes it to a non-negligent cause. .We must accept as given, for the purpose of summary judgment,
¶ 9 We disagree. First, the law does not require a plaintiff to rule out every conceivable explanation for an accident other than negligence before resorting to
res ipsa loquitur. McDonald,
¶ 10 Second, a jury may require expert assistance in resolving the threshold question whether an accident was of a kind not likely to occur in the absence of negligence. Common knowledge may often suffice, as illustrated by the case that elicited the memorable observation, “We can imagine no reason why, with ordinary care, human toes could not be left out of chewing tobacco, and if toes are found in chewing tobacco, it seems to us that somebody has been very careless.”
Pillars v. R.J. Reynolds Tobacco Co.,
¶ 11 Third, just as, when the fact-finder cannot draw upon common knowledge to resolve the point, a plaintiff may present expert testimony that the event would not likely have occurred in the absence of negligence, so may a defendant present the conflicting expert opinion that there is a likely non-negligent explanation for the event. Such a conflict was presented in this case. Further, “[t]he existence of conflicting expert testimony in itself does not render the doctrine inapplicable.”
Washington Metro. Area Transit Auth. v. L’Enfant Plaza Properties, Inc.,
¶ 12 Montgomery Kone attempts to draw the opposite conclusion from
Nieman v. Jacobs,
¶ 13 In
Nieman,
a hotel elevator stopped about two feet below the lobby, and the operator could not raise it into place. The plaintiff was not injured by the movement of the elevator, however, but struck her head on the door frame while trying to climb out.
¶ 14 Montgomery Kone attempts, nonetheless, to profit from the
Nieman
court’s observation that “if ... there are two concurring causes of the accident ... and there is no evidence it was any more likely that the injury was caused by the negligence of defendant than by that of the stranger, the rule (of res ipsa loquitur) does not apply.”
¶ 15 In summary, it was permissible in this case for expert witnesses to address the question whether the accident was of a type ordinarily attributable to negligence.
See Smith v. Munger,
B. Inability to Show the Particular Circumstances that Caused the Elevator to Fall
¶ 16 We have concluded that Lowrey sufficiently established the first element of
res ipsa loquitur
to escape summary judgment on that ground, and, as we have indicated, Montgomery Kone does not challenge the second element; because it maintained the elevator, the elevator was subject to its
¶ 17 In
McDonald,
we stated, “Invocation of
res ipsa loquitur
is no substitute for reasonable investigation and discovery. The doctrine may benefit a plaintiff unable directly to prove negligence; it does not relieve a plaintiff too uninquisitive to undertake available proof.”
¶ 18 In summary, we conclude that the trial court erred in precluding Lowrey from relying upon res ipsa loquitur to advance her case. The summary judgment against her must accordingly be reversed.
III. Common Carrier Doctrine
¶ 19 The case will therefore be remanded, but a question remains: whether the trial court properly determined by partial summary judgment that Montgomery Kone should
not
be subjected under the common carrier doctrine to a higher-than-ordinary standard of care. Common carriers were traditionally said to have a duty to exercise the “utmost” or “the highest degree of care” in the maintenance and operation of their vehicles and equipment.
See Bethel v. New York City Transit Auth.,
¶20 Although passenger elevators have long been classified among the group of common carriers, 7 some courts have distinguished elevator owners and operators from elevator maintenance contractors and have declined to apply the common carrier doctrine to the latter. 8 We need not dwell on the validity of this distinction, however, for we resolve this issue on a more fundamental ground. We uphold the trial court’s refusal to apply the common carrier doctrine because we conclude that it adds no useful element to the ordinary negligence standard of reasonable care under the circumstances.
¶21 The New York Court of Appeals concluded in
Bethel,
after a thorough examination of the origins of the common carrier doctrine, that it retains no current via
bility.
“The objective, reasonable person standard in basic traditional negligence theory ... necessarily takes into account the circumstances with which the actor was actually confronted ..., including the reasonably perceivable risk and gravity of harm to others and any special relationship of dependency between the victim and the actor. ‘The [reasonable person] standard provides sufficient flexibility, and leeway, to permit due allowance to be made ... for all of the particular circumstances of the case which may reasonably affect the conduct required.’ ”
Id. (quoting Restatement (Second) of Torts § 283 cmt. c).
¶22 The District of Columbia Court of Appeals likewise recognized that the flexible standard of reasonable care under the circumstances accommodates whatever levels of care a particular set of dangers may require.
Sebastian v. District of Columbia,
¶ 23 We find the reasoning of these cases persuasive. We also note that an attempt to explain the common carrier doctrine to a jury would be riddled with the prospect of confusion. A common carrier, like any other actor, must take reasonable care under the circumstances of the particular case. Just as the class of
common
carriers contains such disparate members as airplanes, taxis, horse-drawn carriages, and elevators, similarly the circumstances associated with each type of carrier entail disparate elements of reasonable care. To hold that a carrier must exert
more than reasonable
care under the circumstances not only serves no useful purpose; it is a hard concept to make sense of and one very likely to be misunderstood. We believe that the time has come to discard the notion that a common carrier bears a higher duty toward its passengers than that of reasonable care under all of the circumstances. As the
Bethel
court observed, “there is no stratification of degrees of care as a matter of law____ Rather, ‘there are only different amounts of care, as a matter of fact.’ ”
IV. Conclusion
¶ 24 For the foregoing reasons, we hold that the trial court erred in precluding Lowrey from relying upon the doctrine of res ipsa loquitur to advance her case against Montgomery Kone, but we uphold the trial court’s determination that Montgomery Kone is not susceptible under the common carrier doctrine to a higher-than-ordinary standard of care. We remand for further proceedings consistent with this opinion.
Notes
. As always in an appeal from summary judgment, we state the facts in a light most favorable to the non-moving party.
. Lowrey sued the elevator manufacturer, but that claim was dismissed. She also sued the building manager, Cushman & Wakefield of Arizona, Inc., and the trial court granted summary judgment for Cushman & Wakefield as for Montgomery Kone. Although Cushman & Wakefield was originally a party to this appeal, Lowrey has now settled her claims against that defendant. Thus, we consider her case against Montgomery Kone alone.
. Lowrey argues that the evidence is inconsistent with the thesis that a power failure occurred, pointing out that a power failure would not explain the shaking of the elevator before the lights went out, and that the elevator in question and others in the building had stalled and dropped on past occasions without explanation or evidence of power failures.
. The American Law Institute is undertaking to reformulate the elements of res ipsa loquitur in a draft in progress. See Restatement (Third) of Torts: Liability for Physical Harm (Basic Principles) (Tentative Draft No. 1, 2001). In that draft, the black letter law of res ipsa loquitur is set forth as follows: "It may be inferred that the defendant has been negligent when the accident causing the plaintiff’s physical harm is a type of accident that ordinarily happens because of the negligence of the class of actors of which the defendant is the relevant member.” Id. § 17. We will follow with interest the evolution of this formulation, but it suffices for present purposes to examine the doctrine as traditionally defined.
. Although the element of control is frequently stated in terms of "exclusive control by the defendant,” we explained in
McDonald
that the element of control, “if it is not to be pernicious and misleading, must be a very flexible term. It may be enough that the defendant has the right or power of control, and the opportunity to exercise it, as in the case of an owner who is present while another is driving the owner’s car, or a landowner who permits visitors to come on his premises. It is enough that the defendant is under a duty which he cannot delegate to another, as in the case of a surgeon who allows a nurse to count the sponges. It is enough that the defendant shares the duty and the responsibility, as in the case of the landlord of a building from which an electric sign falls into the street.”
. A fourth element — that the accident must not have been due to any negligent or voluntary action on the part of the plaintiff — was once included among the conditions necessary to establish
res ipsa loquitur,
but has been eliminated with the advent of comparative fault.
Cox,
.
First Nat’l Bank of Ariz. v. Otis Elevator Co.,
. Some courts that have applied the common carrier doctrine to elevator maintenance companies are
Norman v. Thomas Emery’s Sons, Inc.,
. This point is illustrated by this court’s 1965 opinion in
First National Bank of Arizona v. Otis Elevator Co.,
