Innerlane

Innerlane refers to a traffic lane designated for slower-moving vehicles or for vehicles intending to exit a roadway soon. Typically, in countries where traffic drives on the right, the innerlane is the lane to the right of the leftmost lane. In countries where traffic drives on the left, it is the lane to the left of the rightmost lane. Its primary purpose is to keep faster-moving traffic flowing smoothly in the outer lanes, preventing congestion and facilitating safer overtaking maneuvers.

The use of the innerlane varies by jurisdiction and road design. In some areas, it is explicitly marked with signage indicating its purpose, such as "slower traffic keep right" or specific exit lane markings. In others, the convention is understood by drivers. Vehicles entering a highway are generally expected to merge into the innerlane if it is the slowest lane available, and then move to an outer lane when safe to do so if they do not intend to exit.

Drivers are often advised to use the innerlane for exiting the highway or when their speed is significantly lower than the surrounding traffic. Failure to adhere to innerlane conventions can lead to traffic slowdowns, increased risk of accidents, and frustration among other drivers. The concept aims to optimize traffic flow by segregating traffic based on speed and intended trajectory.