Long Island, New York, United States
Evaluation of INFORM - Lessons Learned and Applications to Other Systems
Summary Information
Studies comparing 1987 to 1990 flow rates of the Information For Motorist (INFORM) system in Long Island, New York, were used to determine the benefits of ramp metering in combination with motorist information. The results showed that freeway speeds increased 13 percent despite an increase of 5 percent in vehicle-miles traveled (VMT) for the PM peak. The number of detectors showing speeds of less than 30 mi/h decreased 50 percent for the AM peak. Average queue lengths at ramp meters ranged from 1.2 to 3.4 vehicles, representing 0.1 percent of vehicle-hours traveled.