Which of the following is a legal requirement for vehicles in Guam?

All vehicles in Guam are legally required to have both right and left outside mirrors. This requirement ensures that drivers have a broader field of vision, which is essential for safe driving, particularly when changing lanes or merging into traffic. Having mirrors on both sides helps reduce blind spots and enhances overall road safety for all users.

Tinted windows are subject to specific regulations regarding their allowable levels of tint, which may vary by jurisdiction, but do not constitute a blanket legal requirement for all vehicles. The notion that vehicles must be able to exceed the speed limit is contrary to traffic safety laws, which dictate that all vehicles should comply with established speed limits. While some vehicles may come equipped with one outside mirror, the legal mandate specifically requires the presence of both mirrors for improved visibility.