What must vehicles entering a freeway from an entrance ramp do?

Vehicles entering a freeway from an entrance ramp must yield the right of way to traffic already on the main roadway. This means that they need to be cautious and ensure that they do not impede the flow of traffic that is proceeding at higher speeds on the freeway. Yielding is critical for safety, as merging into fast-moving traffic can lead to accidents if the entering driver does not allow sufficient space and time for safe merging.

Other vehicles on the freeway have the right of way, so it's important for those entering from an on-ramp to adjust their speed and position accordingly, ensuring a smooth and safe transition onto the freeway. This practice helps maintain traffic flow and reduces the likelihood of collisions.