North American railroad signals - Wikipedia These include some sort of absolute block "Super Clear" signal that allows passage to the next interlocking with a fixed signal and also the "Cab Speed" signal that informs the engineer to proceed under direction of cab signals
Interpreting and Reading Railroad Signals 1 Signal Colors and Their Meaning The colors used in today's signals are green, yellow, red, lunar, and white (remember, we're talking about signals in North America) The color of a signal tells the engineer what he has to do, the location of that color, determines the speed at which he is allowed to "do it"
Beginners Railroad Signal Guide | Strasburg Rail Road These railroad signals have 3 colored lenses arranged vertically like normal highway traffic lights Unlike traffic lights, color lights are positioned with green at the top, yellow in the middle, and red at the bottom
North American railway signals - Trains Color - The 5 colors used are, red, yellow, green, white (used as a modifier) and sometimes blue and purple Each color of the signal indicates one procedure, Red = stop, yellow (or amber) = caution, green = proceed White is used as a modifier, for example, a red light would normally mean stop
Railroad Signal Aspect Charts - Jovet. net The homepage for signal charts and rules for a variety of North American railroads, which can each be downloaded in PDF format and or printed for personal reference
PRIMER ON AMERICAN RAILROAD SIGNALS In the United States, most signal systems relay either speed information (predominate in the east) or routes (prevails in the west) to the engineer In Britain, signals indicate the condition of the track ahead, and it is left up to the engineer to adjust his speed accordingly
Railroad Signals: Providing Safety And Efficiency While signal displays and meanings often varied from railroad to railroad some of the most common types were the color-light signals (or tri-lights), searchlights, position-lights, and color-position lights with the tri-light the most popular today
Railroad Signaling 101 Green signal, no obstruction is expected When the train moves to the next block, red changes to yellow and yellow to green • Definition: An arrangement of signal and turnout controls interconnected to prevent conflicting movements through tracks at crossings, junctions, and crossovers
Railroad Signal Types Thru The Years When colors were first assigned to signals, white was used for CLEAR, and green was used for APPROACH, or SLOW Obviously, if a lens was busted out, you could see the problem with using white for clear!