National Research Council (U.S.) Transportation Research Board

The acclaimed political analyst offers an examination of the arguments for and against war with Iraq, and exposes the alliance between the news media and the Bush administration.

iii, 63 p. : 28 cm

Changeable message signs are being used increasingly to reduce congestion and prevent accidents in both rural and urban locations. Because of the rapid development of improved technology, there is a need for up-to-date information on the characteristics, applications, and effectiveness of changeable message signs. This report of the Transportation Research Board includes information on requirements for design, installation, operation, and message effectiveness. It also contains a review of previous and current research, and future development needs are identified.

This issue contains 15 papers concerned with intelligent vehicle highway systems (IVHS). Specific topics include: a benefits assessment framework; advanced traffic management and traveler information system architectures; safety; achievable capacities and stream stability; autonomous intelligent cruise control; automatic speed monitors; and roadway electrification in a high-occupancy-vehicle facility. Additional topics include: lateral guidance system in high occupancy vehicle lanes; real-time driver guidance; sequential route choice under an advanced traveler information system; network performance under system optimal and user equilibrium dynamic assignments; real-time IVHS applications; communications architecture; integration of machine vision and adaptive control; and advanced traffic controller software.