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Level crossing signals are electronic warning devices for road vehicles at railroad level crossings. Level crossings can be operated in various ways. In some countries such as the UK, the warning devices are more often than not activated by remote control, I.e. an operator pressing buttons. However, the majority of countries have automated systems.
A level crossing is an intersection where a railway line crosses a road, path, or (in rare situations) airport runway, at the same level, [ 1 ] as opposed to the railway line crossing over or under using an overpass or tunnel. The term also applies when a light rail line with separate right-of-way or reserved track crosses a road in the same ...
U.S. Area served. U.S., Canada, New Zealand. Products. Railway Signalling, Traffic Signalling. The Griswold Signal Company was an American company focused on railway signalling, based in Minneapolis, Minnesota. Founded by Minnesota native Franklin Wolcott Griswold, [1] the company manufactured traffic signals and railroad level crossing signals.
Acquired by the Griswold Signal after the WWII. Production continued until 1949. The Magnetic Signal Company was an American company based in Los Angeles, California, focused on railway signalling. The company was the manufacturer of the ubiquitous "Magnetic Flagman" wigwag railroad crossing (or level crossing) signal, seen all over California ...
A Magnetic flagman wigwag signal in use in southern Oregon, June 2007. 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 ...
Light signals. Swiss light signals are divided into two classes, recognizable by the difference in shape of the signal: type L (for Light) and type N (for numérique (digital)). Type L was developed many years ago. The N system was developed for the Rail 2000 project and shows a clear influence of the Dutch NS'54 system.