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Wigwag is a nickname for a type of railroad grade crossing signal once common in North America, referring to its pendulum-like motion that signaled a train's approach. The device is generally credited to Albert Hunt , a mechanical engineer at Southern California 's Pacific Electric (PE) interurban streetcar railroad, who invented it in 1909 for ...
In its heyday, the Magnetic Signal Company not only manufactured wigwag signals, but also the alternating-flasher type [2] railroad signals, reflectorized "Railroad Crossing" [3] signs, button reflectors for highway signs, traffic island beacons, curb beacons, flasher relays, automobile and bicycle reflectors, and even a "Portafount" portable ...
"Railroad Accessories Corporation" (RACO) merged with Griswold Signal Company in 1964. Manufacturing of crossing signals continued in Minneapolis. In 1971, RACO and Marquardt Industrial Products merged to form Safetran. Management, sales, and manufacture of crossing signals continued in Minneapolis until 2000, when the division moved to Kentucky.
As of 2008 and as with all U.S. railroads, CSX is slowly replacing all of the remaining CPLs on its system with contemporary vertical color light LED signals. The signals on the old Alton Railroad have also been almost entirely replaced as have many of the CPL dwarfs at the two Chicago terminals. The sole exception is the Staten Island Railroad ...
“Here is a perfect example,” the investigator said, “of the gigantic ripoff that is occurring with these railroad crossing upgrades all over the U.S. They are grossly misusing our federal ...
Among their products are railroad crossing signalling parts, branded with the GRSA logo, instead of the usual GRS. This facility was closed in the early 1980s. In 1986, GRS joined with China National Railway Signal & Communication Group Corporation (CRSC) to form the Chinese-American Signal Company (CASCO) in Shanghai, China , which produces ...
The time interval may be controlled by a level crossing predictor, an electronic device which is connected to the rails of a railroad track, and activates the crossing's warning devices (lights, bells, gates, etc.) at a consistent interval prior to the arrival of a train at a level crossing. [1]
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