Example image of eyePlorer eyePlorer map for 'Traffic signal preemption': Emergency vehicle Preempt Traffic light Response time Bus rapid transit Collision Commute Level crossing Light rail Public transport Rail transport Time 9-1-1 Fire station Train Incandescent light bulb 2005 January 2 Portland, Oregon Emitter Infrared Strobe light Frequency Receiver Global Positioning System Single Point of Failure Triangulation Redundancy (engineering) 33-centimeter band Oregon Salem, Oregon U.S. Route 24 in Michigan Monroe, Michigan Ohio Goshen, Indiana Michigan Southgate, Michigan Taylor, Michigan Beaverton, Oregon Oregon Route 10 Manual on Uniform Traffic Control Devices Portable Document Format Texas Transportation Institute Portland Streetcar Northeastern University (MBTA station) MAX Light Rail Title 18 of the United States Code Opticom List of variations in traffic light signalling and operation Hiawatha Line
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