1. American Association of State Highway and Transportation Officials (AASHTO), 2004. Guide for High-occupancy Vehicle Facilities.
2. California Department of Transportation (Caltrans), 2003. High-Occupancy Vehicle Guidelines for Planning, Design and Operations.
3. California Department of Transportation (Caltrans), 2009. California HOV/Express Lane Business Plan.
4. California Department of Transportation (Caltrans), 2011. HOV Guidelines for Planning, Design, and Operations – Traffic Operations Policy Directive.
5. Cassidy, M.J., Kim, K., 2015. Spatiotemporal Studies of Traffic Phenomenon on Freeways with Limited-Access Special Lanes. Report UCB-ITS-RR-2015-01, Institute of Transportation Studies, University of California, Berkeley.