This is аn action for damages for bodily injuries allegedly sustained when plaintiff’s car, at a stop sign, was struck from the rear by a car drivеn by defendant Hutcheon in the course of his employment by defendants Burdick. Jury verdict and judgment were for defendants. Plaintiff’s motion for new trial was granted, and defendants appeal.
*318
The doctrine of res ipsa loquitur applies unconditionally, or “as a matter of law,” when undisputed evidence establishes that plaintiff’s car was stationary when struck from behind by defendants' vehicle
(Alarid
v.
Vanier,
When аn absolute or unqualified res ipsa instruction (e.g. BAJI 206) is warranted by the undisputed facts, it is error to instruct the jury that “the mere fact that an accident happened, considered alone, does not give rise to an inference that either party was negligent.” (Alarid v. Vanier, supra; Persike v. Gray, supra.)
Alarid, Persike,
their predecessors and their progeny (e.g.
Ponce
v.
Black,
The rule is clear, however, that it is error to instruct the jury that the mere occurrence of the accidеnt gives rise to no inference of negligence if, as here, the undisputed facts warrant an unconditional instruction on res ipsа (Alarid v. Vanier, supra; Persike v. Gray, supra). Persike establishes that this rule applies even though, as in this case, the plaintiff failed to request the res ipsa instruction and none was given. *319 On this appeal, we must determine whether the trial court, on motion for new trial, properly held that a colloquy between court and jury amounted to the giving of a “mere happening” instruction.
The formal instructions read to the jury before it retired fully сovered the issues of negligence, proximate cause and burden of proof. The duty of a following driver to maintain a safe space between his vehicle and the car ahead of him was detailed. No instruction on res ipsa having been rеquested, none was given, and the “mere happening” instruction was likewise omitted.
After deliberating for some time, the jury returned to аsk whether, if it found that defendant “did hit” plaintiff’s car, ‘1 does the law then state that he was in fact negligent ? ’ ’ The court summarized its instruction on following too closely, and said that the jury must determine from all the instructions whether the conduct of defendant driver was reasonаble and prudent. It continued “The mere fact that two ears collide doesn’t automatically of itself mean anything, but if you feel that this was carelessness, then, of course, he is negligent.” In response to another question, the judge said that plaintiff “has to рrove first of all that the defendant was negligent. . . . if . . . you don’t think the defendant was negligent you just quit and come in.” The jury resumed its deliberation and shortly returned with its defense verdict.
The trial judge, on motion for new trial, determined that these comments misled the jury. We agree. They еffectively directed the jury to draw no inference whatever from the fact that defendants’ car struck plaintiff’s stationary vеhicle from behind. The mere omission to instruct on res ipsa was waived by plaintiff’s failure to request it
(Hyde
v.
Avalon Air Transport, Inc., supra,
We need not speculate from a cold record as to thе effect of the instruction upon the jury, or the emphasis it may have been given by coming separately from the main body of instructions. The trial judge, who saw and heard the witnesses and observed the jurors, has determined that issue, and
*320
we see no reason to disturb his finding
(Shaw
v.
Pacific Greyhound Lines,
Defendants-appellants argue that Persihe applies only when the “mere happening” instruction is requested by a defendant. We find in that decision neither such suggestion nor any statement that the instruction therе given was in fact so requested. Defendants also urge that plaintiff waived the issue by failing to object when the court, in its necessаrily extemporaneous effort to enlarge upon its instructions in response to a jury request, made the comments it has now found misleading. We recognize fully the problems confronting a trial judge upon such a jury inquiry. But we find no more basis for waiver in this failure to objеct than in the failure of plaintiff to request a res ipsa instruction.
In truth, the “mere happening” instruction (formerly BAJI 131) adds nothing to instructions аdequately covering negligence, proximate cause, and the essentiality of a finding of defendants’ negligence to рermit a verdict for plaintiff. (See
Guerra
v.
Handlery Hotels, Inc.,
Order granting new trial affirmed.
Salsman, J., concurred.
