What action must you take when merging onto the freeway?

When merging onto the freeway, the most effective action is to speed up to match the flow of traffic. This is crucial because freeways are designed for higher speed limits, and merging vehicles need to integrate smoothly with the existing traffic.

Accelerating allows drivers to blend into the stream of vehicles safely and helps prevent the disruption of traffic flow, which can lead to accidents or risks for both the merging vehicle and those already on the freeway. It is important to gauge the speed of the oncoming traffic in the merge lane and adjust your speed accordingly to create a safe merging situation.

While other options discuss aspects of merging, they do not facilitate a smooth entry onto the freeway. For instance, slowing down, waiting for a gap, or stopping can create hazards for both the merging driver and those already on the freeway, potentially leading to dangerous situations. Thus, increasing speed to align with traffic is the safest and most effective approach to merging.