How far before an exit should you be in the correct lane?

Being in the correct lane well before an exit is crucial for safe and effective navigation on highways and freeways. The recommended distance of one mile gives drivers sufficient time to signal their intent, adjust their speed, and merge safely without causing disruption to other traffic. This distance allows for consideration of other road users and potential traffic conditions, such as slower moving vehicles or merging traffic, which could affect the ability to exit smoothly.

A distance of half a mile may not be adequate in certain high-speed situations where traffic is heavy, as it may not provide enough time to react or make lane changes safely. Two miles could lead to earlier lane changes that might disrupt a driver’s flow and may encourage unnecessary lane shifts as drivers might feel pressured to maneuver too early. Being at the exit itself would not allow for any necessary adjustments or preparations for the exit. Thus, one mile offers the optimal balance for safety and efficiency.