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Incandescent Lights are the oldest kind of lights that are used for crossing signals. These have been on crossings every since the invention of the wigwag. These first came in 8" form in the late 1920's on Griswold Rotating Banners. 12" lights were invented in the early 1970's. Norfolk Southern is the only Class 1 railroad that still exclusively uses incandescent lights on newer installations. Basically, all incandescent lights use the same exact parts, but there are some slight differences. Such as lenses, and wattage. The trick to getting the whole light to light up from a little 25 watt bulb is due to reflectors at the very back of the light. |
8" Incandescent light lit up at New Buffalo, MI. on 9/3/2004. |
12" ncandescent lights in MI frames barely lit up due to bad reflectors at Riverside, CA. on 7/23/2003. |
12" incandescent lights in Safetran frames lit up in Charlotte, MI taken sometime in late 2004. |
12" incandescents in Harmon frames light barely lit up at Flagstaff, AZ on 2/4/2001. |
12" incandescent light in Harmon frames lit up at Burlingame, CA on 7/28/2008. |
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12" incandescent lights in GRS LEX-C plastic frames seen lit at Franklin Park, IL on 11/5/2005. |
8" GRS LEX-C plastic incandescent lights seen un-lit at Midland, MI on 10/22/2004. |
12" incandescent lights in Safetran frames seen lit at Western Springs, IL on 7/4/2007. |
12" incandescent lights seen in Safetran frames seen lit at O'Fallon, IL on 8/29/2004. |
