What is the correct procedure for merging onto a highway?

The procedure for merging onto a highway emphasizes the importance of safety and ensuring a smooth integration into the flow of traffic. Signaling is crucial as it communicates your intentions to other drivers, alerting them that you plan to merge. Checking your mirrors is essential for understanding the surrounding traffic situation, allowing you to gauge the speed and distance of vehicles already on the highway.

Matching highway speed is a key aspect of merging, as doing so reduces the potential for conflicts and makes it easier to slip into the existing traffic without disrupting the flow. It ensures that you can merge safely and seamlessly, improving safety for everyone on the road.

The other options suggest practices that could lead to unsafe conditions. For instance, yielding and immediately merging might not account for arriving vehicles, while accelerating before signaling can confuse other drivers. Merging without checking surroundings poses significant risks, as it could lead to collisions with other vehicles that aren't visible in your blind spots.