Delaware Driver Education State Practice Test

Which of the following is prohibited on vehicles?

1. Red lights in front

2. Back-up lights

3. Fog lights

4. Marker lights

The correct answer is: Red lights in front

Red lights in front of vehicles are prohibited because they can create confusion for other drivers. The color red is universally associated with emergency vehicles and the act of stopping, so vehicles equipped with red lights in the front can mislead other drivers into thinking they need to yield or stop, even when that is not the case. This regulation helps ensure that drivers can quickly identify emergency situations on the road and respond appropriately, maintaining safety for all road users. In contrast, back-up lights, fog lights, and marker lights have specific purposes and are permitted under certain conditions. Back-up lights are used to alert other road users when a vehicle is reversing, fog lights improve visibility in poor weather conditions, and marker lights help outline the vehicle’s dimensions, aiding in visibility and safety, especially at night or during low-light situations.