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Simulated fire alarm
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Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [01]
![Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [01]](../../../../../i/upload/2024/07/19/20240719123304-52d5c28f-cu_s9999x250.jpg "Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [01] (1956 visits) Traffic light gantry over the intersection of Fairfax County Parkway and Sunrise Valley Drive in Res...")
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Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [02]
![Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [02]](../../../../../i/upload/2024/07/19/20240719123309-f3f6006f-cu_s9999x250.jpg "Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [02] (1521 visits) Traffic light gantry over the intersection of Fairfax County Parkway and Sunrise Valley Drive in Res...")
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Traffic signals in Derwood, Maryland [01]
![Traffic signals in Derwood, Maryland [01]](../../../../../i/upload/2024/07/20/20240720101908-de0aad1a-cu_s9999x250.jpg "Traffic signals in Derwood, Maryland [01] (1362 visits) Traffic signal at the intersection of Columbus Avenue and Metro Access Road in Derwood, Maryland. A...")
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Traffic signals in Derwood, Maryland [02]
![Traffic signals in Derwood, Maryland [02]](../../../../../i/upload/2024/07/20/20240720101912-698b18e1-cu_s9999x250.jpg "Traffic signals in Derwood, Maryland [02] (8279 visits) Traffic signals at the intersection of Columbus Avenue and Metro Access Road in Derwood, Maryland. ...")
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Traffic signals in Derwood, Maryland [03]
![Traffic signals in Derwood, Maryland [03]](../../../../../i/upload/2024/07/20/20240720101918-d2aa492d-cu_s9999x250.jpg "Traffic signals in Derwood, Maryland [03] (1509 visits) Traffic signal at the intersection of Columbus Avenue and Metro Access Road in Derwood, Maryland. A...")
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Signal X-238 at East 55th Street station
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Route selector box at East 55th Street station
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Railroad crossing at Maiden Lane [01]
![Railroad crossing at Maiden Lane [01]](../../../../../i/upload/2025/03/08/20250308225400-a196ec7a-cu_s9999x250.jpg "Railroad crossing at Maiden Lane [01] (668 visits) CSX locomotive 2783 leads a freight train as it passes the railroad grade crossing at Maiden Lane in...")
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Kmart in Bridgehampton, New York [45]
![Kmart in Bridgehampton, New York [45]](../../../../../i/upload/2025/03/14/20250314222949-5a171ebc-cu_s9999x250.jpg "Kmart in Bridgehampton, New York [45] (622 visits) Wheelock AS fire alarm horn/strobe mounted on a column at the Kmart store in the Bridgehampton Commo...")