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Heat Emergency - A heat emergency is in effect for Washington, DC. Residents are urged to take precautions against the heat.

Find cooling centers, spray parks and more information about heat emergencies.


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How Red-Light Cameras Work

how red light cameras work


  1. Sensors in the pavement detect when a vehicle crosses the stopline after the traffic signal has turned red.
  2. First violation photo is taken as the vehicle crosses the stop line.
  3. Second photo is taken after the vehicle enters the intersection.