What is the correct action when merging onto the interstate?

When merging onto the interstate, the correct action is to accelerate to match the speed of traffic. This is crucial because interstates are designed for vehicles traveling at higher speeds, and merging at too slow a speed can create a dangerous situation for both the merging driver and those already on the interstate. By accelerating to match the flow of traffic, the driver ensures a smoother transition, reducing the risk of collisions and allowing for better traffic flow.

In addition, it is important to use the on-ramp to build speed. This allows the driver to enter the highway safely and to find an appropriate gap in traffic, making it possible to merge without forcing other drivers to quickly alter their speed or position. Proper merging etiquette requires not just the ability to enter the lane, but doing so safely and efficiently, and matching the speed of existing traffic is key to achieving that.