Exclusive road or traffic lane limited to buses, vanpools, carpools, and emergency vehicles. (APTA1)
High Occupancy Vehicle Lane . Exclusive road or traffic lane limited to buses, vanpools, carpools, emergency vehicles, and in some cases, single occupant motorcycles. HOV lanes typically have higher operating speeds and lower traffic volumes than adjacent general purpose lanes. HOV lanes have proven to be successful in major metropolitan areas across the US ; however, their full effectiveness is usually not realized until about one to two years after implementation.
Protected lanes, usually located in the middle of freeways, that are used by buses, vanpools and carpools and private cars to carry more than one passenger at a time.