"This course attempts to communicate to travel modeling professionals some of the [travel demand forecasting] procedures developed by their colleagues around the U.S. and abroad, most of which have been implemented as part of an existing travel demand modeling system."--p.1-5

This synthesis will be of interest to transportation planners, highway engineers, environmental personnel, highway design engineers, transit planners, highway administrators, and others concerned with the planning, design, and operational features of preferential high- occupancy vehicle (HOV) lanes on highways. Information is provided on the current and proposed state of the practice in North America. This synthesis describes the state of the art with respect to preferential treatment for HOVs on highways. This report of the Transportation Research Board provides information on long-distance facilities, such as barrier-separated, concurrent-flow (separated and nonseparated), and contraflow facilities, as well as on short-distance facilities, such as queue by-pass lanes. Planning, design, and operational features of each treatment are described. The issues and operating results are described, and specific case studies are included.

This study examines the feasibility of broadening the pool of high occupancy vehicle (HOV) users on a no-cost basis for HOV facilities where such inclusion would not lead to capacity problems. Focus is on identifying various potential non-pricing methods for optimizing the use of HOV facilities. A large number of various potential non- pricing user groups are identified, evaluated, and consolidated by using these attributes: air quality, fuel savings, enforcement safety, system efficiency, cost effectiveness, and capacity that is treated as a potential fatal flaw.