1. High occupancy vehicle lanes: not always more effective than general purpose lanes;Dahlgren;Transportation Research A,1998
2. High occupancy/toll lanes: phasing in congestion pricing a lane at a time;Fielding,1993
3. Washington START transportation model: description and documentation, RFF DP 07-43;Houde,2007
4. Carpool lanes—an idea whose time has come and gone;Orski;TR News,2001
5. Virtual exclusive busways: improving urban transit while relieving congestion;Poole,2005