What should you do before changing lanes?

Before changing lanes, it is crucial to check your mirrors and blind spots to ensure that the lane is clear and that it is safe to make the maneuver. This practice is essential for preventing collisions and ensuring the safety of all road users. By using mirrors, you can see vehicles approaching from behind or along the sides, while checking blind spots allows you to detect any vehicles that may not be visible in your mirrors. This two-step verification is a fundamental part of safe driving, as it helps you become aware of your surroundings and avoid potential accidents.

In contrast, signaling and switching immediately does not give other drivers adequate notice of your intentions, which can lead to dangerous situations. Speeding up before changing lanes can increase the risk of a crash, especially if you do not have enough space. Waiting for assistance from another vehicle may not always be feasible or practical, and it can lead to confusion on the roadway. Therefore, the best practice is to check your mirrors and blind spots first.