Before changing lanes, what is the last action a driver must take?

Before changing lanes, the last action a driver must take is to check the blind spot. This step is crucial because the blind spot is an area that is not visible in the mirrors. Even though a driver may have checked the rearview mirror and signaled their intention, it is essential to ensure that no vehicle or object is present in the blind spot that could lead to a collision. This final check confirms that it is safe to change lanes, providing an added layer of safety before making the maneuver.

The importance of checking the blind spot cannot be overstated, as this action helps to avoid accidents that could occur from misjudging the presence of vehicles or obstacles that are not visible through the mirrors. Ensuring that your surroundings are clear before making such a move is a critical aspect of safe driving practices.