What component serves as parking lamps or blinking hazards on a vehicle?

The correct answer is that side markers serve as parking lamps or blinking hazard lights on a vehicle. Side markers, which are typically located on the fenders or in the rear area of the vehicle, are designed to enhance visibility and indicate the vehicle's presence to other drivers, especially in low-light conditions. Their functionality includes serving as both parking lights when the vehicle is stationary and hazard lights when activated, contributing to safety and awareness on the road.

While tail lights are also used for signaling and visibility, they primarily function as brake lights and running lights when the vehicle is in operation; thus, they are not specifically designated for parking or hazards in the same way that side markers are. Headlights are designed primarily for illuminating the road ahead during nighttime or poor visibility scenarios, while fog lights enhance visibility in foggy conditions but do not fulfill the role of parking or hazard lights. Fog lights have a specific purpose and are not used for signaling to other drivers as side markers do. This distinction clarifies why side markers are the correct choice for this functionality.