What is the correct action when entering an interstate?

When entering an interstate, the correct action is to use the merging lane to increase speed. This approach is crucial because interstates are designed for high-speed travel, and entering at a compatible speed helps ensure the safety of both the merging vehicle and the traffic already on the highway. The merging lane allows drivers to accelerate to match the speed of vehicles in the right lane on the interstate, facilitating a smoother transition.

It’s essential to build enough speed to fit into the flow of traffic safely, which prevents abrupt changes in speed that could lead to accidents. When drivers correctly judge the speed of oncoming traffic and adjust their own speed accordingly, they enhance overall road safety and minimize the risk of collisions during the merging process.

The other choices represent actions that could create hazardous situations. Stopping completely before merging can cause traffic disruptions and increase the risk of rear-end collisions. Merging at any speed without consideration for surrounding vehicles can lead to dangerous conflicts, while slowing down in the merging lane not only complicates the merging process but can also invite dangerous maneuvers from drivers behind.