District of Columbia HOV Lane Access
Alternative Fuel Vehicle Exemption from Driving Restrictions
Clean fuel vehicles are exempt from time-of-day and day-of-week restrictions and commercial vehicle bans, in fleets operating at least 10 vehicles in an ozone non-attainment area, as defined by the Clean Air Act. This exemption does not permit unrestricted access to High Occupancy Vehicle lanes, except for covered fleet vehicles that have been certified by the Environmental Protection Agency as Inherently Low Emission Vehicles (ILEV) and continue to be in compliance with applicable ILEV emission standards. For this exemption, a clean fuel vehicle is a motor vehicle that has been certified to meet a set of emission standards that classifies it as a clean fuel vehicle. (Reference District of Columbia Code 50-714)
