What should be your action if you need to change lanes on a multi-lane road?

When you need to change lanes on a multi-lane road, the correct action is to signal and check mirrors. This process ensures that you communicate your intention to other drivers and are aware of your surroundings. Signaling your intention to change lanes alerts other drivers to your actions, which is crucial for maintaining safety on the road.

Additionally, checking mirrors allows you to monitor the traffic in your current lane and the lane you wish to enter, helping you identify any potential hazards or vehicles that may be too close. Just relying solely on changing without signaling or checking could lead to dangerous situations, as it does not provide other drivers with any indication of your actions and fails to ensure that the lane is clear. Keeping awareness of your blind spot is also important, but it complements the actions of signaling and checking mirrors, rather than serving as the only step in the process of changing lanes safely.