You are driving in the right lane and notice a car entering the highway from an on-ramp. There is a vehicle in the lane to your left. What should you do?

1. Speed up so the merging car has to wait
2. Slam on your brakes to let them in
3. Adjust your speed to create a gap for the merging vehicle - slow down slightly or speed up if safe
4. Honk at the merging vehicle

Source: State DMV Official Driver's Manual