Ohio CDL Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The most important way to see the sides and rear of your vehicle is through the use of mirrors. Properly adjusted mirrors provide a comprehensive view of the areas around your vehicle that are typically not visible through windows or the rearview mirror alone. Side mirrors help drivers monitor blind spots and traffic approaching from the sides, while the rearview mirror allows for a clear assessment of the area directly behind the vehicle. Using mirrors in conjunction with one another gives a better overall spatial awareness, which is crucial for safe maneuvering, especially in larger vehicles like trucks or buses.

Though side windows and rearview mirrors provide some visibility, they are limited compared to the broad, adjustable views that side and rear mirrors can offer. Cameras can assist in visibility, but they do not replace the need for mirrors, as it's vital for drivers to maintain an understanding of their surroundings using traditional methods before relying solely on technology. Proper use and adjustment of mirrors is a fundamental skill for any commercial driver's license holder, ensuring safe and effective driving practices.