Delaware Code Title 21. Motor Vehicles § 4110. Traffic signals

(1) Flashing red.--When a red lens is illuminated with intermittent flashes, drivers of vehicles shall stop before crossing the stop limit whether marked by a sign or painted line, but if none, before entering the crosswalk on the near side of the intersection, or if none, then before entering the intersection, and the right to proceed shall be subject to the rules applicable after making a stop as at a stop sign.

(2) Flashing yellow or green.--When a yellow or green lens is illuminated with intermittent flashes, drivers of vehicles may proceed through the intersection or pass such signals only with caution.