Why must you slow down when driving on gravel or dirt surfaces?

Slowing down when driving on gravel or dirt surfaces is crucial primarily because these surfaces provide less traction compared to paved roads. When a vehicle is traveling at higher speeds on loose materials like gravel or dirt, the tires can lose their grip, making it more challenging to steer and stop. This reduction in traction increases the risk of skidding, which can lead to accidents, especially when navigating curves or sudden stops. Therefore, adjusting your speed helps maintain better control of the vehicle and enhances safety while driving on these types of surfaces.