When exiting a highway, when should you start to slow down?

Slowing down when you have moved into the exit lane is the most appropriate approach. This strategy allows you to safely transition from the highway to the exit without disrupting the flow of traffic. Once you have moved into the exit lane, it signals that you are preparing to leave the highway, and it is safe to begin reducing your speed.

This practice ensures that you are adhering to the flow of traffic, as the highway speed is typically higher than what is safe for exit ramps and local roads. It also provides sufficient time to adjust your speed to match the conditions of the exit ramp. Exiting too quickly or too abruptly can lead to loss of vehicle control or accidents.

In contrast, starting to slow down at the first sight of the exit sign could disrupt traffic flow and may not give you enough time to maneuver into the exit lane safely. Slowing down before the exit ramp begins may not provide a smooth transition, and doing so right after passing the last exit could result in being unprepared to exit safely.