
    Jeremiah Regan, Respondent, v. Brooklyn Heights Railroad Company, Appellant.
    Second Department,
    November 28, 1906.
    Evidence — negligence — expert testimony as to safety of brake on street car — conclusion of witness — when erroneous admission of evidence material.
    Although an expert may be permitted to testify as to the adequacy and suita-. bility of a given style of brake for use in a given manner, yet where the question is whether or not a master has used reasonable care to f ui'riish a reasonably safe and suitable brake, it is error to permit an expert to testify that the brake in question could not be uniformly relied upon.
    So, too, it is error to permit an expert to give a conclusion as to the cause of the failure of a car to stop, based on an assumption that the motorman handled the brake in a certain manner, for that question should be left to the jury.*
    Where it devolved upon the servant to show that the brake was insufficient in order to recover for injuries received by the car running into a- derailment switch and such expert testimony was the only proof offered to show the negligence of the master,-its admission was not harmless and a verdict for the plaintiff must be reversed..
    Appeal by the defendant, the Brooklyn Heights Railroad Company, from a judgment of the Supreme Court in favor of the plaintiff, entered in tile office of the clerk of the county of Kings on the 1st day of December, 1905, upon the verdict of a jury for $15,000, and also from an order entered in said clerk’s office on the 13th day of December, 1905, denying the defendant’s motion for a new trial made upon the minutes.
    
      I. R. Oeland [George D. Yeomans with Mm on the brief], for the appellant.
    
      John Burlinson Coleman, for the respondent.
   Miller, J.:

The defendant appeals from a judgment entered on a verdict for personal injuries and from an order denying a motion for a new trial. The injuries were the result of the derailment of a flat car. The plaintiff was the defendant’s servant. The derailment was caused by a derailing switch, and resulted from the failure of the motorman to stop the car before reaching the switch, either because the brakes were not applied soon enough or because they were insufficient, and of course the plaintiff had to .establish the latter theory to recover. The brake in question was known as the standard lever brake and was operated with a ratchet by hand. It. had been in use by the defendant on cars similar to the one in question some six years, and, according to the defendant’s evidence, which is undisputed, had worked satisfactorily. It appeared tliát standard lever brakes differed in weight and strength, but there was no testimony as to the size and strength of the brake in question. There was evidence that the particular cár in question had been in the shop for repair's the day before the accident, and that a new tension spring was placed on the brake designed to throw the brake away from the car wheel when the ratchet was released, but there is no evidence tending to show that the brake was not in perfect working order when the accident occurred, or that it was unsuitable for use on the car at the place in question, unless, such evidence was furnished by the testimony of an expert witness who Was permitted to testify over objection that a standard lever brake could not uniformly be relied upon to stop the car in question under the conditions stated. . After giving said testimony the witness was then asked this question: “ Q. If a motorman used this method (referring to the method of applying the brake) on a car such as has been referred to in the previous question, and failed to stop the car in a distance equal to that from a short distance after crossing Fifth avenue to the derailing switch between Fifth and Fourth avenue, what, in your opinion, would be the cause of such failure ? ” Over objection the witness was permitted to answer : A. In my opinion it would be due to the insufficiency of the brake apparatus.” It is evident that the > latter ruling was inadvertent because the court subsequently sustained an objection- to practically the ■ same question put by the defendant to its expert, remarking: “ That is a question for the jury to determine.” It is evident that this judgment must be reversed, because both of said rulings cannot be sustained, and as this expert evidence saved a nonsuit it cannot be said that the ruling was harmless. There may be some difficulty in particular cases in determining when an expert shall be limited to the statement of facts not within common knowledge, leaving the jury,to draw the inference or conclusion therefrom, and when the expert may testify both as to said facts and the conclusion to be drawn from them. (See Dougherty v. Milliken, 163 N. Y. 527; Finn v. Cassidy, 165 id. 584; Jenks v. Thompson, 179 id. 20.) For the purposes of this case it may be assumed that a qualified expert might give an opinion on the adequacy and suitability of a given style of brake for use in a given manner, because we are of the opinion that .that is a subject respecting which an expert would be much more likely to form a correct opinion than would a person .of ordinary experience, even were all the facts before him. In this case the witness was permitted to state that the brakes in question could not uniformly be relied upon. The question was whether the defendant had used reasonable care to furnish a reasonably safe and suitable appliance, not whether the appliance furnished could uniformly be relied upon to do the work for -which it was designed. Accidents are likely to occur to any machine, and an expert might testify, without. committing perjury, that a safe and suitable appliance could not uniformly be relied upon, depending upon what he meant by the word “ uniformly.” We think that the exception to this evidence presents reversible error, as does also the exception to the expert evidence to the effect that the particular accident was due to the insufficiency of the brake apparatus. If proper expert testimony respecting the different kinds of brakes, their method of operation and their' adaptability to different situations, had been admitted, the jury, as well as the expert, could have determined upon such evidence, together with the evidence respecting the circumstances surrounding the occurrence, the cause of the accident; and it was not proper to allow an expert to 'say whether the accident was due to ■the fault óf the motorman or that of the brakes.

The judgment and order 'must be reversed and á new trial granted, costs to abide the event.

Hirschberg, P. J., Woodward, Gaynor and Rich, JJ., concurred.

Judgment and order reversed and new trial granted, costs to abide the event. •  