Generally, motorcycles are entitled to full use of a lane on a highway; these vehicles are subject to certain operational benefits and limitations. Motorcyclists may operate two abreast in a single lane. An operator of a motorcycle may not pass a vehicle in the same lane as the vehicle being overtaken, unless the vehicle is a bicyclist.
A motorcycle may not be operated between lanes of traffic, a practice commonly referred to as lane-splitting, lane-sharing, or lane-filtering. California is the only state in the U.S. that allows lane-splitting.
The operator of a motorcycle may overtake and pass in the same lane as the vehicle being overtaken, or operate between lanes of traffic. The operator of a motorcycle may only pass in the same lane or between lanes of traffic when the motorcycle is traveling at a speed of 35 miles per hour or less and not more than 10 miles per hour over the speed of traffic flow.
It is a traffic infraction for an operator of a motor vehicle to intentionally impede or attempt to prevent a motorcyclist from operating as permitted under the bill.