INFORM (INformation FOR Motorists, formerly known as the Integrated Motorist Information System-IMIS) is a corridor traffic management system designed to obtain better utilization of existing highway facilities in a 40-mile (64.4-km) long highway corridor on Long Island, New York. The system includes integrated electronic traffic monitoring, variable message signing, ramp metering, and related strategies to optimize traffic flow through a heavily congested corridor. The evaluation of INFORM was conducted using extensive field data, surveys, and data collected through the system. The Technical Report presents the overall results of the evaluation, including comparisons of vehicle miles of travel, vehicle hours of travel, speed, occupancy, ramp delays, and equipment failures, motorist perceptions, and other congestion-related measures for the a.m. and p.m. peak periods. Incident case studies were used to evaluate motorist response to and effectiveness of variable message signing strategies. In addition to presenting the quantitative results, the Technical Report documents the many lessons learned in the design, implementation, operation, and evaluation of INFORM.


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