What vehicle equipment is mandated by Title 21 for nighttime driving?

Functioning headlights, taillights, and reflectors are essential equipment mandated by Title 21 for nighttime driving because they ensure that a vehicle is visible to other drivers and pedestrians in low-light conditions. Headlights provide illumination of the road, enabling drivers to see obstacles and navigate safely after dark. Taillights signal the vehicle’s presence and braking actions to those behind, which is critical for preventing accidents. Reflectors contribute to visibility, alerting others to the vehicle's position, especially in situations where lighting may be minimal or nonexistent.

This requirement promotes safety for all road users, as the combination of these lighting elements significantly reduces the risk of nighttime collisions. Other options do not encompass the necessary components for safe nighttime operations. Daytime running lights, while useful during the day for increased visibility, do not fulfill the requirements set for driving at night. Fog lights, which are specifically designed for use in foggy conditions, are not a general requirement for nighttime driving. Reflective stickers may improve visibility but do not serve the same comprehensive safety purpose as the mandated headlights, taillights, and reflectors.