Delaware Driver Education State Practice Test

What type of lights must be visible on the rear of a vehicle when braking?

1. Amber lights

2. Red lights

3. White lights

4. Green lights

The correct answer is: Red lights

When a vehicle brakes, it is required to have red lights activated at the rear. The use of red brake lights is a standard across all vehicles as they signally alert other drivers that the vehicle is slowing down or stopping. This visual cue is crucial for maintaining road safety, allowing other drivers to react appropriately by either slowing down or preparing to stop, thus preventing potential rear-end collisions. The other colors mentioned serve different purposes; for instance, amber lights typically indicate caution or the use of turn signals, while white lights are typically used for reverse lights. Green lights are not standard for vehicle lighting regulations pertaining to brake lights. Hence, the requirement for red lights ensures uniformity and clarity on the roads when it comes to communicating a driver's intent to stop or slow down.