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Traffic Signals
Work on traffic signals falls into three general categories:
- Preventative maintenance is performed on each traffic signal controller each month. the intersection is walked around checking pedestrian push buttons and visually checking the intersection for needed repairs on a weekly basis.
- Signal heads are inspected and cleaned once each year. While inspecting the LED lamps, the lenses and refractors are cleaned, and the alignment of the lights is checked, along with the condition of the pole.
- Trouble calls for accident damage or malfunction are answered as they come in during working hours. After hours, calls are handled according to a priority system set up by Maintenance personnel. Some are responded to immediately and some are left on flash until the following morning or through the weekend. Troubles range from lights being out and detectors malfunctioning in the streets to electronic failures in the cabinet.
- What should drivers do when a traffic signal is flashing?
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When a traffic signal malfunctions but still has power, it will often revert to an all-red flashing mode. When you approach a signal light that is flashing red, you must come to a complete stop (signals that are in flashing mode can return to normal operation at any time and without warning, even when repair workers are not present). The flashing red may change to a solid red, and drivers often fail to notice the difference, running the red light. Proceeding on a solid red light is always illegal and can lead to a deadly crash. Be alert, and make sure that the light is still flashing and that it is safe to proceed before entering the intersection.
- What should I do if a traffic signal is not working (power outage)?
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Always treat the intersection as a 4-way stop.