1. Alternative Fuel Data Center, 2016. Alternative Fuel Vehicles and High Occupancy Vehicle Lanes. Available from: https://afdc.energy.gov/laws/HOV.
2. The Austrian HOV-lane—experiences in implementation and operation;Berger;J. Civ. Eng. Manag.,2002
3. California Department of Motor Vehicle, 2020. Clean Air Vehicle Decals - High Occupancy Vehicle Lane Usage. Available from: https://www.dmv.ca.gov/portal/dmv/detail/vr/decal.
4. Caltrans, 2020. High-Occupancy Vehicle (HOV) Systems. Available from: https://dot.ca.gov/programs/traffic-operations/hov.
5. Caltrans, 2009. Data Integration and Reporting Branch (DIRB) State Highway Mileage and Other Data from: https://www.metro.net/projects/hov/#_edn1.