A driver shall, upon one blast of a police whistle given by a police officer with hand raised, bring the vehicle to a full stop, and shall not proceed again until he receives a signal so to do from the officer. Three or more blasts of the police whistle is the signal for alarm and indicates the approach of a fire engine or other danger.
N.J. Stat. Ann. § 39:4-122
Signal by police whistle
Current official text: New Jersey Legislature. Digitized from the New Jersey Legislature bulk statutes download. Reproduced from public-domain New Jersey statutes; confirm against the official source for the current text. Not legal advice.