According to Guam law, when must the headlight be on while operating a motorcycle?

The correct understanding is that in Guam, the headlight on a motorcycle must always be on while operating the vehicle, regardless of the time of day or weather conditions. This law is in place to enhance visibility and safety for both the motorcyclist and other road users. By having the headlight on at all times, motorcyclists can increase their chances of being seen, particularly during low-light conditions or adverse weather, and help prevent collisions.

The rationale behind this requirement is grounded in traffic safety principles, as motorcycles can often be less visible compared to larger vehicles. Therefore, keeping the headlight illuminated serves as an important safety measure to ensure that motorcycles are noticed by other drivers. This practice is a common regulation in many jurisdictions aimed at reducing accidents and improving overall roadway safety for all users.