What should you do when approaching an on-ramp where vehicles are merging?

When approaching an on-ramp where vehicles are merging, shifting over a lane if possible is the best option because it helps to create a safer environment for both the merging vehicles and yourself. By moving over, you give the merging driver more space to safely enter the roadway, reducing the likelihood of a collision and facilitating smoother traffic flow.

This practice of yielding to merging traffic is essential for maintaining safety on the road. It acknowledges the challenges that drivers face when entering a highway, where they often need to accelerate to match the speed of traffic. By making space for these vehicles, you contribute to a more harmonious driving experience.

Other options presented may not provide optimal safety or may lead to hazardous situations—speeding up can increase the risk of collision, ignoring merging vehicles can create dangerous interactions, and turning on hazard lights does not address the immediate need for lane space and can confuse other drivers.