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Metro Center station [01]
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Metro Center station [02]
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Anacostia station entrance pylon
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Rosslyn station entrance pylon [02]
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Blue Line train arriving at Rosslyn station
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3000-Series train arriving at Van Dorn Street station
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West Falls Church-VT/UVA station [01]
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Woman waiting at Fort Totten
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Interior of WMATA railcar 5090
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Uncovered Dupont Circle station entrance pylon
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System Sensor fire alarm bell
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SpectrAlert Advance horn/strobe at Big Lots
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Fire alarm pull station at Wawa in Glen Burnie
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Metro Center station entrance pylon
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Pedestrian bridge over railroad tracks [01]
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Pedestrian bridge over railroad tracks [02]
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Pedestrian bridge over railroad tracks [03]
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Pedestrian bridge over railroad tracks [04]
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Pedestrian bridge over railroad tracks [05]
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Pedestrian bridge over railroad tracks [06]
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Peace sign on a bridge pier
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Washington Metro bridge over Paint Branch Trail
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Green Line train crosses bridge over Paint Branch Trail
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Box culvert under CSX tracks
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System Sensor L-Series horn/strobe [03]
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System Sensor L-Series horn/strobe [04]
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System Sensor L-Series horn/strobe [01]
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System Sensor L-Series horn/strobe [02]
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Fire alarm pull station at Hudson's Bay Queen Street [01]
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Fire alarm pull station at the Sheraton Centre
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Fire alarm pull station at The Hospital for Sick Children (SickKids)
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Fire alarm pull station at the Banting Institute
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Mircom MS-404 emergency pull station
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Bell Canada manhole cover [03]
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Bell Canada manhole cover [02]
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Bell Canada manhole cover [04]
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Bell Canada manhole cover [01]
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Mircom fire alarm at 495 King Street West
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Siemens fire alarm pull station at Pickering Town Centre
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Pace fire alarm pull station at Hudson's Bay in Pickering
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Mircom fire alarm pull station at Walmart in North York [01]
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Mircom fire alarm pull station at Walmart in North York [02]
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Fire alarm pull station at the Chelsea Hotel [02]
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Fire alarm pull station at the Chelsea Hotel [01]
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Fire alarm pull station at North York Centre
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Taxi bell and strobe
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AT&T Long Lines tower in Glen Allen, Virginia [01]
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AT&T Long Lines tower in Glen Allen, Virginia [04]
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AT&T Long Lines tower in Glen Allen, Virginia [03]
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AT&T Long Lines tower in Glen Allen, Virginia [02]
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AT&T Long Lines tower near Williamsburg, Virginia [08]
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AT&T Long Lines tower near Williamsburg, Virginia [07]
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AT&T Long Lines tower near Williamsburg, Virginia [06]
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AT&T Long Lines tower near Williamsburg, Virginia [05]
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AT&T Long Lines tower near Williamsburg, Virginia [04]
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AT&T Long Lines tower near Williamsburg, Virginia [03]
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AT&T Long Lines tower near Williamsburg, Virginia [02]
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Potomac Avenue station [03]
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Potomac Avenue station [02]
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McPherson Square station [03]
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McPherson Square station [02]
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SpectrAlert Advance at ground level
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AT&T Long Lines tower near Williamsburg, Virginia [01]
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AT&T Long Lines tower in Finksburg, Maryland [04]
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AT&T Long Lines tower in Finksburg, Maryland [02]
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AT&T Long Lines tower in Finksburg, Maryland [03]
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AT&T Long Lines tower in Finksburg, Maryland [01]
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AT&T Long Lines tower in Finksburg, Maryland [05]
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Siren at United Steam Fire Engine Company #3
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Wheelock Safepath Remote Microphone Station
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Old and new pull stations at Target in Frederick, Maryland
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Petersburg Courthouse [22]
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Interstate 85 split [01]
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Petersburg Courthouse [23]
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Interstate 85 split [02]
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Petersburg Courthouse [24]
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Interstate 85 and US 460 reassurance markers [01]
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Petersburg Courthouse [25]
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Interstate 85 and US 460 reassurance markers [02]
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Petersburg Courthouse [26]