It is too clear to admit of discussion, that; the act of the plaintiff in travelling on the Lord’s day was not within the exception of the statute, (Gen. Sts. c. 84, § 2,) as being justified by necessity or charity. He was, at the time of the accident, in the pursuit of a secular business, carried on for purposes of profit and gain, and the temporary inconvenience which might have been caused by his failure to supply provisions on Monday to those persons who usually dealt with his principal falls far short of proving any such exigency as woul< *20warrant a jury in finding that the plaintiff was lawfully on the highway at the time when the accident happened. Bennett v Brooks, 9 Allen, 118.
The more difficult question arises on the state of the pleadings. The unlawful act of the plaintiff in travelling on the Lord’s day is not alleged in the answer. No averment whatever is made as a distinct ground of defence. The case is at issue solely on a denial of the averments in the declaration. Of these, the only one which can be said to include the fact that the plaintiff was lawfully on the highway at the time of the accident is, that he was travelling thereon, “ using due care.” If the traverse of this averment properly put in issue the legality of the plaintiff’s act in using the highway on the Sabbath, then it is clear that the case was rightfully submitted to the jury, and the verdict cannot be disturbed.
The term “ due care,” as usually understood in cases where the gist of the action is the negligence of the defendant, implies not only that a party has not been negligent or careless, but that he has been guilty of no violation of law in relation to the subject matter or transaction which constitutes the cause of action. Thus, in an action brought against a railroad corporation for a collision at the crossing of a highway, evidence that the defendants omitted to ring the bell of the engine or to sound the whistle, as required by law, would be competent evidence in support of the allegation of a want of due care. So in case of a collision of two vehicles on a highway, evidence that the plaintiff was travelling on the left side of the road, in violation of the statute, when he met the defendant, would be admissible to show negligence. In such cases, evidence that a party is guilty of a violation of law supports the issue of a want of proper care; nor can it be doubted that in these and similar actions the averment in the declaration, of the use of due care, and the denial of it in the answer, properly and distinctly put in issue the ,egality of the conduct of the party as contributing to the accident or injury which forms the groundwork of the action. No specific averment of the particular unlawful act which caused or contributed to produce a result could, in such cases, be deemed *21necessary. We are unable to see that a different rule is applicable to the case at bar. It is true that no direct unlawful act oí omission or commission by the plaintiff, done at the moment when the accident happened, and tending immediately to produce it, is offered to be shown in evidence. But it is also true that if the plaintiff had not been engaged in the doing of an unlawful act the accident would not have happened, and the negligence of the defendants in omitting to keep their road in proper repair would not have contributed to produce an injury to the plaintiff. It is the disregard of the requirements of the statute by the plaintiff which constitutes the fault or want of due care which is fatal to the action. In this aspect, it is clear that no averment of such illegal conduct was necessary to enable the defendants to avail themselves of it as a ground of defence to this action. It was a substantive fact included in the averment of due care in the declaration, and sufficiently put in issue by the denial in the defendants’ answer. It is only when the defendant relies on some substantive distinct fact, not alleged by the plaintiff or included in the averments in the declaration, that it is necessary to set it forth in the answer. Granger v. Ilsley, 2 Gray, 521. Mulry v. Mohawk Valley Ins. Co. 5 Gray, 541. The case of Bosworth v. Swansey, 10 Met. 363, fully supports the view which we have taken of the pleading in this action. That was an action like this, to recover damages for a defect in a highway. The defence was, as here, that the plaintiff was unlawfully travelling on the road on the Lord’s day. The court determined that it was incumbent on the plaintiff to prove that he was lawfully travelling, from necessity or for purposes of charity, and it was distinctly held that the case fell within the principle which, in such cases, renders it necessary for the plaintiff to prove that he was in the use of due care, to entitle him to recover damages. It is never necessary that a defendant should allege in his answer any facts which it is the duty of the plaintiff to prove in support of his case, before the defendant can be called on for the grounds of his defence.
We have assumed that the allegation of the use of due care by the plaintiff at the time of the accident, comprehends the *22fact that the plaintiff was then lawfully on the highway. Such, we think, is the reasonable construction of the form of declaration prescribed in the forms annexed to the practice act, Gen. Sts. c. 129; otherwise, it would seem that a material fact, which it was the duty of the plaintiff to prove, was not included in the statute form of pleading. But if it were not so, it would not change the result. If it is not necessary to aver the fact in the declaration, it certainly cannot be required of the defendant to deny its existence, or make any averment respecting it, in the answer. It has already been determined that an omission to deny in an answer a fact necessary to the maintenance of the action, but not alleged in the declaration, is not to be deemed an admission of such fact. Tarbell v. Gray, 4 Gray, 444. On the same ground, a defendant need not traverse such fact, oi make any averment respecting it, if the plaintiff does not allege it in his declaration. Exceptions overruled.