What is the law regarding bicycle lights when riding at night in Pennsylvania?

In Pennsylvania, the law requires that bicycles be equipped with a white headlight visible from a distance of at least 500 feet when riding at night, as well as a red rear reflector. This ensures that the cyclist is visible to others on the road, enhancing safety for both the cyclist and motor vehicle operators. The presence of a white light in the front allows oncoming traffic to see the cyclist, while the red rear reflector signifies the presence of the bicycle from behind, creating a clear visual cue for drivers.

The requirement for a front white light and rear red reflector aligns with national safety standards that help reduce accidents during nighttime riding. While flashing lights are often used for additional visibility, they are not a legal requirement under Pennsylvania law, which focuses on steady lights to help establish a cyclist's position on the roadway. Thus, the selected answer accurately reflects the legal requirements set forth to promote safe cycling practices at night.