Abstract: In a multiple lane highway, the minimum speed and maximum speed (i.e. speed limit) which motorists are permitted to drive is progressively increased from the right lane to the furthest left lane. For instance, in a four-lane highway, the right lane may have a speed limit of 55 mph, the next lane would have a minimum speed requirement of 55 mph, the third lane would have a minimum speed requirement of 65 mph and the furthest left lane would have a minimum speed requirement of 75 mph. Drivers with less experience, or those who wish to drive at slower speeds, use the right lane. More experienced drivers with no infractions or driver license restrictions are permitted to move over and drive in progressively higher speed lanes according to pre-established guidelines and regulations requiring driver license endorsement or other approval by the state regulating authority, such as the Department of Motor Vehicles.