What should be done before changing lanes?

Before changing lanes, it is essential to signal and check mirrors to ensure a safe maneuver. Signaling your intention to change lanes alerts other drivers of your movement, allowing them to adjust their speed or position accordingly. This is a crucial part of safe driving and helps prevent accidents.

Checking mirrors is just as important; it allows you to assess the position and speed of vehicles in adjacent lanes and in your blind spots. This comprehensive check ensures that there are no obstacles or vehicles that could pose a danger during the lane change.

Other options lead to unsafe driving practices. Speeding up significantly can increase the likelihood of losing control or not being able to safely merge. Waiting for other drivers to signal can cause confusion and does not guarantee safety, as not all drivers may signal their intent. Making sudden movements can be alarming for other drivers and can result in accidents. Therefore, the best practice is to signal your intention clearly and thoroughly check your surroundings before changing lanes.