When preparing to move to the left lane, what is the best action to take?

When preparing to move to the left lane, the best action is to check both mirrors and signal. This process ensures that you are aware of your surroundings and that other drivers are informed of your intention to change lanes, promoting safety on the road. Checking your mirrors helps you identify any vehicles or obstacles that may be in your blind spots, while signaling alerts other drivers, allowing them to make room for you if necessary. Both of these actions significantly reduce the risk of accidents during lane changes.

Turning your head to the left alone would not provide the full awareness needed before changing lanes, as it might not account for vehicles or obstacles that are behind or adjacent to you. Additionally, speeding up and switching lanes quickly can lead to dangerous situations, as it doesn’t allow for careful assessment of the traffic conditions and may catch other drivers off guard. Therefore, the approach of checking mirrors and signaling is the safest and most responsible method for changing lanes.