What must you do before merging onto a highway?

Before merging onto a highway, it is critical to check mirrors and blind spots for other vehicles. This action ensures that you are aware of your surroundings and can make a safe decision about when to enter the highway. Checking the mirrors allows you to see vehicles in adjacent lanes, while looking over your shoulder into blind spots helps you spot any vehicles that may not be visible in your mirrors.

This awareness is crucial because highways typically have faster-moving traffic, and a failure to check these areas could lead to collisions or dangerous situations. Ensuring a clear path before merging is fundamental to safe driving practices, enhancing both your safety and the safety of other drivers on the road.