Which part of the vehicle must always be kept clean for safety?

Keeping the lights and mirrors of a vehicle clean is crucial for safety. Clean lights ensure that they function effectively, allowing the driver to see the road at night and making the vehicle more visible to other road users. Clear headlights, taillights, and indicators help in preventing accidents by ensuring that other drivers can see the vehicle's signals, such as when turning or stopping.

Similarly, clean mirrors are essential for proper visibility. They provide the driver with a clear view of the traffic behind and beside the vehicle, which is fundamental for safe lane changes, merging, and general awareness of surrounding vehicles. Dirty or obscured mirrors can significantly impair a driver's ability to judge distances and the presence of other vehicles, increasing the risk of collisions.

While maintaining the cleanliness of the engine, battery, and bodywork is also important for overall vehicle maintenance and aesthetic, the direct impact on safety makes the lights and mirrors the most critical areas to keep clean.