When must all head lamps on your vehicle be functioning properly?

All headlamps on your vehicle must be functioning properly at all times because they are crucial for visibility and safety in various driving conditions. Properly functioning headlamps not only illuminate the road during nighttime but are also essential during inclement weather, such as rain or fog, to enhance visibility for both the driver and other road users. Additionally, headlamps help ensure that your vehicle is visible to others at all times, reducing the risk of accidents. This requirement underscores the importance of vehicle maintenance and the role of lighting in promoting safe driving practices.