At a railroad crossing, flashing red lights require you to:
Correct answer: C – Stop and wait until the lights stop flashing, then cross only when safe
Flashing railroad-crossing lights require a complete stop. Remain stopped until the lights have stopped flashing, and proceed only when the crossing can be completed safely. Do not drive around, under, or through a gate while it is closed or moving.
Source: C.R.S. § 42-4-706(1), (2) – Obedience to railroad signal, Colorado Driver Handbook — “Railroad Crossing,” “Flashing Light Signals”



