In Long Island, New York, ramp metering and traveler information increased freeway speeds by 13 percent despite an 5 percent increase in vehicle-miles traveled during PM peak periods.

January 1992
Long Island,New York,United States

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.


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Evaluation of INFORM - Lessons Learned and Applications to Other Systems

Author: Smith, S. and C. Perez

Published By: Paper presented at the 71st Annual Transportation Research Board Meeting. Washington, DC.

Source Date: January 1992


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Goal Areas


Typical Deployment Locations

Metropolitan Areas


DMS, CMS, VMS, Changeable Message Signs, Variable Message Signs, CCTV, closed circuit television cameras, road monitoring, sensors, vehicle detector, traffic detection, traffic monitoring, congestion monitoring, ramp meters

Benefit ID: 2000-00098