What is the recommended action when passing a vehicle on the highway?

The recommended action when passing a vehicle on the highway is to signal, check mirrors, and ensure the maneuver is safe before proceeding. This process emphasizes the importance of communication and awareness while driving. Signaling alerts other drivers of your intentions, which is essential for maintaining safety on the road. Checking mirrors helps ensure that the lane you intend to move into is clear of other vehicles, including those in your blind spots. Additionally, confirming that it is safe to pass means that you are assessing the speed of your vehicle, the vehicle you are passing, and any potential obstacles or traffic in your path.

This careful approach minimizes the risk of accidents and enhances the safety of all road users, ensuring that everyone can navigate the roadways more effectively. The other options lack fundamental safety protocols; for instance, speeding up without signaling disregards the need to communicate with drivers around you, while passing in the right lane without checking mirrors completely ignores the importance of situational awareness. Sounding your horn to indicate your intention may not be a necessary step and could lead to confusion or misinterpretation by other drivers. In a sense, option A encompasses the best practices of safe driving during a passing maneuver.