What is the most effective way to check for vehicles in your blind spots?

Checking for vehicles in your blind spots is crucial for safe driving, especially before changing lanes or merging. Quickly glancing over your shoulder is the most effective method as it allows you to visually confirm the presence of any vehicles that may not be visible in your mirrors. This action provides a direct line of sight and enables you to detect vehicles that could otherwise go unnoticed.

While adjusting your mirrors can help minimize blind spots, it does not eliminate them entirely. Similarly, using the rearview mirror and relying solely on the side mirrors can leave blind spots unobserved. Therefore, combining a shoulder check with properly adjusted mirrors maximizes safety and awareness when changing lanes.