LI ITS - Components and Benefits
Real-time data allows operators to determine when, and for how long, traffic should be redirected away from problem areas. LI ITS tools include coordinated signaling systems, video monitoring of corridors, ramp metering and VMS. The LI ITS system also links computer adjusted traffic signals at major connecting routes with the east-west highways and parkways in the system to move vehicles more efficiently. Portable VMS signs will be used when deemed necessary, e.g., to control the heavy traffic generated during the summer as motorists escape to the sunny beaches, or during repair and reconstruction efforts. ITS ComponentsLI ITS consists of electronic sensors, as one of its major components, at frequent intervals throughout the LI ITS corridor. When a vehicle moves into the sensor's field, an impulse is sent to the transportation management center (TMC) where computers continuously measure and analyze traffic conditions.Using this data to determine the volume and speed of traffic on different sections of the highways, traffic information coordinators can immediately spot delays and transmit appropriate advisory messages to motorists via variable message signs (VMS). Traffic information coordinators also advise the appropriate police and emergency organizations of traffic incidents so they can respond quickly and more efficiently. LI ITS also provides information for:
ITS BenefitsUnder incident conditions, estimates show ITS variable message signs save 300,000 vehicle hours annually with the original INFORM system. Experts predict that traffic congestion can be reduced by 20 percent by the year 2011 in areas that use ITS. The benefits of ITS include:
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LI ITS advises drivers of road conditions through real-time adjustments of traffic control systems and VMS. 