Which of the following is NOT a factor that affects stopping distance?

Stopping distance is influenced by various factors such as the speed of the vehicle, the weight of the vehicle, and the conditions of the road.

The speed of the vehicle is a critical factor because the faster a vehicle travels, the longer it takes to come to a complete stop. This is due to the increased momentum that needs to be overcome when applying brakes.

The weight of the vehicle also plays a significant role. Heavier vehicles require a greater distance to stop compared to lighter ones because of the greater force needed to counteract the vehicle's inertia.

Road conditions, such as whether the surface is wet, icy, or uneven, can dramatically affect stopping distance as well. Adverse road conditions can reduce traction, making it more difficult for tires to grip the surface, thus increasing stopping distance.

In contrast, the color of the vehicle does not impact stopping distance at all. While color might affect visibility and perception under certain circumstances, it has no bearing on the physical properties that determine how quickly a vehicle can stop.