Protect and illuminate your construction or hazardous site, above and below ground, with our wide selection of barrier, flagging, and underground tapes. These bright, attention-grabbing types of messaging tape can alert passerbys and pedestrians of something dangerous or cautionary up ahead. 5420 Reflective tape comes in many fluorescent colors and can been seen from a great distance away at night. Caution tape (or barricade tape) literally says “caution” in black ink over a bright yellow background. These types of tape can also keep you in compliance with state and local safety regulations.