what is lane filtering on a motorcycle

Lane filtering is a practice where a motorcyclist rides between slower-moving or stationary traffic, such as at a stoplight, to get to the front of the intersection. It is also known as "white lining". Unlike lane splitting, which allows a motorcycle to navigate between rows of vehicles circulating at regular speeds, lane filtering allows the motorcyclist to trickle down between rows of stopped or slow-moving vehicles. Lane filtering is usually observed at stoplights and allows riders to navigate towards the front of the line, which in turn allows them to take off swiftly and safely without being sandwiched between two vehicles. Lane filtering is legal in some states in the US, such as Utah and Montana, and is a normal practice for motorcyclists in many countries outside of the US.