What is the first step to take when changing lanes?

The first step to take when changing lanes is to signal. Signaling your intention to change lanes is crucial as it communicates your intentions to other drivers on the road. This action helps ensure that everyone is aware of your planned maneuver, allowing them to adjust their speed or position accordingly.

By signaling, you create a safer environment for both yourself and others. It sets the stage for the subsequent steps, such as checking your mirrors and blind spots for any vehicles that may be nearby. While those actions are important as well, signaling should always come first to indicate that you are about to make a change.