Rev Up and Rule the Road 2025: JJ Keller Entry Level CDL Driver Test Challenge!

Secondary vehicle controls are designed to enhance the operation of the vehicle by providing additional functionality that contributes to safe driving practices. These controls might include features that allow the driver to manage aspects such as cruise control, windshield wipers, and lighting, all of which play a crucial role in maintaining vehicle safety under various driving conditions.

For example, effectively managing windshield wipers during rain or snow is essential for maintaining visibility, which directly impacts safety. Similarly, operating the headlights or turn signals ensures that the driver can communicate properly with other road users, further enhancing safety on the road.

While other options may involve vehicle operations to some extent, they do not specifically focus on the broad scope of safety in vehicle operation that secondary controls are intended to assist with. Thus, the primary goal of these secondary controls is to support the driver in safely managing the vehicle under different circumstances, making safe operation their primary function.