What should cars parked on the side of the highway at night display?

Cars parked on the side of the highway at night should display parking lights. This helps to ensure that the vehicle is visible to other drivers, reducing the risk of collision. Parking lights are designed specifically for this purpose, providing a low level of illumination that makes the vehicle stand out without drawing attention in a way that may distract other drivers.

When a vehicle is parked on the side of the road, having the parking lights on signals to approaching vehicles that there is an obstruction, allowing for safer navigation around the parked car. While hazard lights indicate that a vehicle is experiencing an emergency, parking lights are sufficient for a stationary vehicle that is not in trouble. Headlights, on the other hand, are intended for driving conditions and are not appropriate for indicating a parked vehicle. Tail lights are also important as they indicate that a vehicle is stationary, but parking lights are the specific feature used to alert other drivers when parked at night.