VARIABLE SPEED LIMIT SYSTEMS Provide Motorists With Speed Limit Guidance
CONDITIONS AND SPEED There are many factors that could influence safe driving speed including road work, traffic volume (i.e. rush hour), pedestrian traffic (i.e. school zone), weather conditions (i.e. fog, ice), and roadway surface conditions. Sensors gather the specified data to be analyzed by SmartZone software, and based on the outcome, a safe traveling speed is determined and displayed on speed limit signs upstream. As traffic (or environ- mental) conditions vary, speed limit signs can be programmed to change either automatically or manually. Cameras are often used to compliment the Variable Speed Limit System. Cameras allows the user to remotely confirm or deny the existence of an adverse road condition and update the system response accordingly. MAINTAINING A SAFE SPEED Variable Speed Limit System enables motorists to maintain a safe speed, while maintaining traffic moving safely and efficiently. Studies show that reducing the speed limit in unfavorable or adverse conditions reduces the probability of accidents, helps manage traffic flow, and increases safety.
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