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Silver Spring pocket track
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Largo Town Center interlocking
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Blinker signals in Ringgold, Maryland [05]
![Blinker signals in Ringgold, Maryland [05]](../../i/upload/2024/07/19/20240719104755-52af4492-cu_s9999x250.jpg "Blinker signals in Ringgold, Maryland [05] (1879 visits) Blinker signals supplementing a four-way stop at the intersection of Maryland Routes 64 and 418 in R...")
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Blinker signals in Ringgold, Maryland [04]
![Blinker signals in Ringgold, Maryland [04]](../../i/upload/2024/07/19/20240719104800-95af76d6-cu_s9999x250.jpg "Blinker signals in Ringgold, Maryland [04] (1936 visits) Blinker signals supplementing a four-way stop at the intersection of Maryland Routes 64 and 418 in R...")
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Blinker signals in Ringgold, Maryland [03]
![Blinker signals in Ringgold, Maryland [03]](../../i/upload/2024/07/19/20240719104805-6afa45cc-cu_s9999x250.jpg "Blinker signals in Ringgold, Maryland [03] (1972 visits) Blinker signals supplementing a four-way stop at the intersection of Maryland Routes 64 and 418 in R...")
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Blinker signals in Ringgold, Maryland [02]
![Blinker signals in Ringgold, Maryland [02]](../../i/upload/2024/07/19/20240719104829-0c02a370-cu_s9999x250.jpg "Blinker signals in Ringgold, Maryland [02] (2018 visits) Blinker signals supplementing a four-way stop at the intersection of Maryland Routes 64 and 418 in R...")
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Blinker signals in Ringgold, Maryland [01]
![Blinker signals in Ringgold, Maryland [01]](../../i/upload/2024/07/19/20240719104834-c83d81b6-cu_s9999x250.jpg "Blinker signals in Ringgold, Maryland [01] (1896 visits) Blinker signals supplementing a four-way stop at the intersection of Maryland Routes 64 and 418 in R...")
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Railroad signal and crossbuck [03]
![Railroad signal and crossbuck [03]](../../i/upload/2024/07/19/20240719182941-01b8a736-cu_s9999x250.jpg "Railroad signal and crossbuck [03] (2101 visits) Railroad signal and crossbuck for traffic on Railroad Avenue approaching the intersection of Main St...")
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Railroad signal and crossbuck [02]
![Railroad signal and crossbuck [02]](../../i/upload/2024/07/19/20240719182944-4e71c934-cu_s9999x250.jpg "Railroad signal and crossbuck [02] (2015 visits) Railroad signal and crossbuck for traffic on Railroad Avenue approaching the intersection of Main St...")
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Railroad signal and crossbuck [01]
![Railroad signal and crossbuck [01]](../../i/upload/2024/07/19/20240719182948-4d10427f-cu_s9999x250.jpg "Railroad signal and crossbuck [01] (1903 visits) Railroad signal and crossbuck for traffic on Railroad Avenue approaching the intersection of Main St...")
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Federal Signal Model 5 siren on the Hanover Street Bridge
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Fire alarm strobe in the basement of the Cathedral of Learning [01]
![Fire alarm strobe in the basement of the Cathedral of Learning [01]](../../i/upload/2024/07/20/20240720160707-e8b3757d-cu_s9999x250.jpg "Fire alarm strobe in the basement of the Cathedral of Learning [01] (11236 visits) Wheelock LS1-24 fire alarm strobe in a restroom in the basement of the Cathedral of Learning, a 42-s...")
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Fire alarm strobe in the basement of the Cathedral of Learning [02]
![Fire alarm strobe in the basement of the Cathedral of Learning [02]](../../i/upload/2024/07/20/20240720160712-a7dc9975-cu_s9999x250.jpg "Fire alarm strobe in the basement of the Cathedral of Learning [02] (11221 visits) Wheelock LS1-24 fire alarm strobe in a restroom in the basement of the Cathedral of Learning, a 42-s...")
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Fire alarm strobe in the basement of the Cathedral of Learning [03]
![Fire alarm strobe in the basement of the Cathedral of Learning [03]](../../i/upload/2024/07/20/20240720160717-d55e3f5b-cu_s9999x250.jpg "Fire alarm strobe in the basement of the Cathedral of Learning [03] (11178 visits) Wheelock LS1-24 fire alarm strobe in a restroom in the basement of the Cathedral of Learning, a 42-s...")
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Fire alarm speaker/strobe at Cathedral of Learning [01]
![Fire alarm speaker/strobe at Cathedral of Learning [01]](../../i/upload/2024/07/20/20240720160727-2f98f3a9-cu_s9999x250.jpg "Fire alarm speaker/strobe at Cathedral of Learning [01] (2996 visits) Wheelock E70 fire alarm speaker/strobe on the 36th floor of the Cathedral of Learning, a 42-story bu...")
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Fire alarm speaker/strobe at Cathedral of Learning [02]
![Fire alarm speaker/strobe at Cathedral of Learning [02]](../../i/upload/2024/07/20/20240720160732-eef65e9c-cu_s9999x250.jpg "Fire alarm speaker/strobe at Cathedral of Learning [02] (3026 visits) Wheelock E70 fire alarm speaker/strobe on the 36th floor of the Cathedral of Learning, a 42-story bu...")
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Fire alarm horn at Webster Towers
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Traffic signal at Fifth and Tennyson Avenues [01]
![Traffic signal at Fifth and Tennyson Avenues [01]](../../i/upload/2024/07/20/20240720160807-bec12e29-cu_s9999x250.jpg "Traffic signal at Fifth and Tennyson Avenues [01] (2675 visits) Traffic signal showing a yellow aspect at the intersection of Fifth and Tennyson Avenues in Pittsbur...")
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Traffic signal at Fifth and Tennyson Avenues [02]
![Traffic signal at Fifth and Tennyson Avenues [02]](../../i/upload/2024/07/20/20240720160815-65b10c2a-cu_s9999x250.jpg "Traffic signal at Fifth and Tennyson Avenues [02] (2660 visits) Traffic signal showing a red aspect at the intersection of Fifth and Tennyson Avenues in Pittsburgh,...")