What should you do before merging onto the highway?

Before merging onto the highway, it is crucial to accelerate to match the speed of highway traffic. This is important for maintaining a smooth flow of traffic and ensuring safety. When merging, you want to enter the highway without disrupting the speed of vehicles already traveling on it, which can lead to accidents or sudden stops.

Accelerating to match the speed allows you to blend in seamlessly with other vehicles, making it easier for both you and others on the road. It is also vital to use your mirrors and signals to communicate your intentions to other drivers while you are merging.

In contrast, options such as slowing down or changing your radio station may hinder your ability to merge effectively and safely. Looking for a parking spot is irrelevant when preparing to enter a highway, as this action is only pertinent when you are intending to stop or leave your vehicle. Each of these actions can create obstacles and potential hazards when merging, highlighting why matching the speed of highway traffic is essential for a safe merge.