When checking clearance lights, what should be observed?

When checking clearance lights during a pre-trip inspection, it's essential to observe for physical damage or disrepair. Clearance lights play a critical role in ensuring the visibility of the vehicle to other drivers, especially in low-light conditions or during nighttime. Any physical damage, such as cracked lenses or broken bulbs, can impede their functionality, leading to a potential safety hazard.

Ensuring that the lights are in good condition is vital not just for compliance with safety regulations, but also for the overall safety of the bus and its passengers. While other factors, such as brightness in nighttime conditions and functionality during movement, are important for assessing performance, the primary focus during the inspection should be on the physical state of the lights to ensure they are fully operational and safe to use.