Which factor is crucial for maintaining overall vehicle safety during chassis inspection?

The functionality of lighting systems is crucial for maintaining overall vehicle safety during chassis inspections because effective lighting is essential for visibility on the road. Properly functioning headlights, taillights, turn signals, and brake lights ensure that a vehicle can be seen by other drivers, especially in low-light or adverse weather conditions. They also allow a driver to see the roadway ahead, which is critical for making safe driving decisions.

If the lighting systems are malfunctioning or inadequate, it dramatically increases the risk of accidents as other road users may not be aware of the vehicle's presence or intentions. Therefore, examining the functionality of these systems is a key component of ensuring that vehicles operate safely and adopt necessary practices to prevent potential hazards on the road.