The purpose of the study was to document the process by which decisions are made in California about implementing intelligent transportation systems (ITS) projects, and to consider ways for "mainstreaming" ITS in the sense of evaluating ITS projects alongside non-ITS projects. The transportation...

The City of Los Angeles and Caltrans would like a simulation testbed for testing alternate traffic management strategies in the Santa Monica corridor. This study assesses the data available for such a simulation and describes data needs, potential sources, and data preparation required. It...

High occupancy vehicle (HOV) lanes are being promoted as a way to reduce congestion and air pollution on urban freeways. While constructing new general purpose lanes is often seen as environmentally destructive, constructing new HOV lanes is seen as good for the environment and effective in...

It is well known among HOV practitioners that the success of a high occupancy vehicle (HOV) lane in motivating people to shift to HOVs depends on maintaining a travel time differential between it and the adjacent general purpose lanes. This differential exists only if there is continuing delay...

The success of a high occupancy vehicle lane in motivating people to shift to carpools and buses depends on maintaining a travel time differential between it and the adjacent general purpose lanes. This differential, in turn, depends on the level of continuing delay on the general purpose lanes....