HOV stands for "High-Occupancy Vehicle." It refers to vehicles carrying a minimum number of passengers, typically two or more, such as carpools, vanpools, and transit buses
. The term is commonly used in the context of HOV lanes-special traffic lanes reserved for these vehicles to encourage carpooling and reduce congestion on highways
. HOV lanes are marked by a white diamond symbol and are intended to promote ridesharing, improve traffic flow, and reduce pollution by increasing the number of people per vehicle
. Vehicles allowed in these lanes usually include passenger cars with multiple occupants, motorcycles, public transit buses, and sometimes certain low- emission or alternative fuel vehicles