What should you do before changing lanes?

Before changing lanes, it is crucial to signal your intention and check mirrors. Signaling communicates your intended lane change to other drivers, allowing for safer and more predictable movements on the road. This action helps to prevent misunderstandings and reduces the risk of collisions.

Additionally, checking mirrors is essential to ensure that there are no vehicles in your blind spots and that it is safe to proceed with the lane change. By confirming that the lane is clear and that other drivers are aware of your decision, you promote safer driving practices for yourself and others on the road.

The other options do not contribute to safe lane changing. Speeding up may cause more congestion or lead to unsafe situations. Using high beams at inappropriate times can blind or distract other drivers, and honking should be reserved for alerting others to immediate danger rather than as a signal for changing lanes. Thus, signaling and checking mirrors are the best practices to follow.