SLCgov.com

Lights

State law requires a white front light from dusk to dawn. This is a requirement in all 50 states and is also a smart idea since most crashes occur from the front, especially in an urban environment.

A red rear reflector or red rear light (either flashing or solid) is also required. Reflectors visible to the sides are also required, unless your headlight has sidelights. Utah Statute 41-6a-1114.