N.J. Stat. § 48:12-83
In any action against a railroad company to recover damages for injury or death occurring at any crossing at which the company has not installed any safety gates, bell or other warning or protective device of the kind usually employed to warn and protect the traveling public and such injuries or death are alleged to be due to the negligence of the company, the plaintiff's action shall not be dismissed on the ground of contributory negligence on the part of the person injured or killed, but it shall be left to the jury to determine whether such person was exercising due and reasonable care under the conditions existing at the crossing at the time of such injury or death.
If the jury shall determine that the person injured or killed was not exercising due and reasonable care under the circumstances, the verdict shall be against the plaintiff and in favor of the defendant.
N.J.S. § 48:12-83