When should you slow down after exiting a highway?

Slowing down after exiting a highway should occur once you have moved into the exit lane. This is important because the exit lane has specific traffic conditions that may differ from those on the highway. The ramp may have a sharper curve or a lower speed limit, and waiting until you are in the exit lane allows you to adjust your speed safely and maintain control of your vehicle.

Slowing down too early, such as when you see the exit sign, could disrupt the flow of traffic behind you. Similarly, slowing down immediately after crossing the white line may not give you enough time to adjust to the conditions of the exit ramp. Additionally, waiting until you're approaching the exit ramp itself can be too late, as you may already need to reduce speed to safely navigate the turn and any potential hazards. Therefore, adjusting your speed once you've merged into the exit lane ensures a smoother and safer transition from the highway.