CDL General Knowledge Practice Test

Checking your mirrors regularly is the most effective way to ensure you can see the sides and rear of your vehicle. Proper mirror adjustment enhances visibility and makes it easier to monitor surrounding traffic conditions. Regular checks provide a broader overview of potential hazards or vehicles that may be in your blind spots, ensuring that you're aware of your environment while driving. While looking over your shoulder can provide additional visibility and is especially useful when changing lanes or merging, it doesn't replace the benefit gained from regular mirror checks. A rearview camera can assist in providing vision to the rear of the vehicle, particularly when backing up, but it should not be solely relied upon as it can have limitations, such as blind spots that the camera cannot detect. Adjusting your seating position is important for comfort and control but does not directly enhance visibility of the sides and rear. Thus, regular mirror checks remain the most comprehensive approach to maintaining awareness of your surroundings.