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Traffic signals play a crucial role in managing urban traffic, and they come in various types, including traffic control signals, fixed-time signals, manually operated signals, traffic-actuated (automatic) signals, pedestrian signals, and special traffic signals.<br>In the United States, the implementation of Traffic Signal Priority (TSP) initially faced several challenges, including:<br>u2022tTechnical feasibility and cost concern<br>u2022tInaccurate vehicle detection technologies<br>u2022tLimited deployment of vehicle location systems<br>u2022tLack of standardization<br>u2022tIncompatible traffic signal controllers<br>u2022tCentralized
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