Cellular Signal Priority
The advent of radio-based communications greatly expanded the range and environments from which signal priority could be requested. For these systems, vehicles carry a transceiver, which sends AES-encrypted requests to a detector located in the traffic cabinet. This method does require an antenna mounted at the intersection. These antennas are typically pole mounted, but some traffic departments choose to go with a low-profile antenna mounted on the traffic cabinet itself (as shown). Wireless communications also opened up the ability to process and respond to transit conditions remotely.
Radio-based communications have opened the path for various other wireless methods, including cellular signal priority, WiFi, and others (each with their own strengths and weaknesses). Additionally many transit vehicles are already equipped with transit systems that include GPS positioning. And it’s not uncommon for a transit fleet to be made up of vehicles with differing signal-priority technologies.
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location: Manufactured By STC, Inc. 1201 W. Randolph St, McLeansboro, IL 62859
phone: Richard D’Alessandro: (214) 607-0100
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Last Update : May 12, 2022 12:48 AM
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