What is the correct way to merge onto a highway?

When merging onto a highway, using the acceleration lane to match the speed of traffic is crucial for safety and smooth traffic flow. The acceleration lane allows drivers to gain speed and adjust to the velocity of vehicles already on the highway, reducing the risk of accidents that can occur from abrupt lane changes or slow merging speeds.

This technique helps ensure that you can safely merge into the traffic at an appropriate speed, minimizing the disruption to the flow of vehicles already traveling on the highway. It also provides other drivers the opportunity to gauge your speed and adjust their positioning accordingly, enhancing overall safety on the road.

The other options do not contribute to safe merging practices. For instance, merging at any speed could lead to dangerous situations, as it does not consider the speed of other traffic. Signaling after entering the highway may not provide enough warning to other drivers, which could lead to confusion or accidents. Finally, not allowing other cars to change lanes contradicts the cooperative nature of highway driving, where drivers must often yield and create space for one another to merge safely.