Delaware Code Title 21. Motor Vehicles § 4161. Obedience to signal indicating approach of train or other on-track equipment, drawbridge automatic signal system controlling the flow of traffic

(1) A clearly visible electric or mechanical signal device gives warning of the immediate approach of a railroad train or other on-track equipment.

(2) A crossing gate is lowered or when a human flagman gives or continues to give a signal of the approach or passage of a railroad train or other on-track equipment.

(3) A railroad train or other on-track equipment approaching within approximately 1,500 feet of the highway crossing emits a signal audible from such distance and such railroad train or other on-track equipment, by reason of its speed or nearness to such crossing, is an immediate hazard.

(4) An approaching railroad train or other on-track equipment is plainly visible and is in hazardous proximity to such crossing.