A vehicle operating at a speed significantly below the posted limit or the general flow of traffic, while occupying the center lane, presents a multifaceted issue. This behavior can impede the progress of other vehicles, contributing to congestion and increasing the risk of collisions, especially on roads designed for passing. For instance, on a two-lane highway, such an obstruction forces other drivers to make potentially hazardous maneuvers to overtake.
Maintaining appropriate lane positioning and speed is crucial for safe and efficient traffic flow. Impediments to smooth traffic movement can lead to frustration among drivers, increasing the likelihood of aggressive behaviors like tailgating or unsafe passing attempts. Historically, traffic laws and road designs have evolved to prioritize efficient movement, recognizing the economic and societal costs of congestion and delays. The concept of “keep right except to pass” reflects this ongoing effort to optimize road usage.