Standards for North American railroad signaling in the United States are issued by the Association of American Railroads (AAR), which is a trade association...

in North American railroad signaling. For a more technical look at how signals actually work, see North American railway signaling. There are two main...

(1998), Two Centuries of Railway Signalling, Oxford Publishing Co., ISBN 0-86093-541-8 Solomon, B., (2010), Railroad Signaling, Voyageur Press, ISBN 978-0-7603-3881-0...

Railway signalling (BE), or railroad signaling (AE), is a system used to control the movement of railway traffic. Trains move on fixed rails, making them...

crossing (chiefly international), grade crossing or railroad crossing (chiefly American), road through railroad, criss-cross, train crossing, and RXR (abbreviated)...

Moreover, the name of the signaling center itself may not be employed operationally in preference to the name of individual signaling workstations. This is...

Pulse code cab signaling is a form of cab signaling technology developed in the United States by the Union Switch and Signal corporation for the Pennsylvania...

America's first transcontinental railroad (known originally as the "Pacific Railroad" and later as the "Overland Route") was a 1,911-mile (3,075 km) continuous...

General Railway Signal – The other major US railway signaling company North American railroad signals Safetran – Another US railway signaling company, now...

Automatic block signaling (ABS), spelled automatic block signalling or called track circuit block (TCB) in the UK, is a railroad communications system...

button on the cab signal display. North American railroad signals Railway signalling Elements of Railway Signaling. General Railway Signal Company. June 1979...

Metro-North Railroad (reporting mark MNCW), trading as MTA Metro-North Railroad, is a suburban commuter rail service operated by the Metropolitan Transportation...

Level crossing signals are electronic warning devices for road vehicles at railroad level crossings. Level crossings can be operated in various ways. In...

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...

History General Signal Building in Buffalo Union Switch and Signal, the other major US railway signaling company. North American railroad signals "A Centennnial:...

Eastern and Chatham, used motor-operated three-position semaphore signals of North American origin. These worked in the upper quadrant to distinguish them...

communications. Even where safety systems such as cab signaling have been present for many decades, the freight railroad industry has been reluctant to fit speed control...

(2003). Railroad Signaling. St Paul, Minnesota: MBI Publishing Company. ISBN 978-0-7603-1360-2. OCLC 52464704. The first manufacturer of signal equipment...

Association of American Railroads (AAR) An industry trade group representing primarily the major freight railroads of North America (Canada, Mexico and...

compatible with the permitted speed allowed by signalling, including automatic stop at certain signal aspects. If it is not, ATP activates an emergency...

Europe, but uses words and the same color as the American crossbuck. In contrast to the American "RAILROAD CROSSING", Australian signs say "RAILWAY CROSSING"...

Bibliotheca Palatina in Heidelberg. Color position light, a type of North American railroad signal Commercial pilot licence, a qualification that permits the holder...

a fixed manual signaling system across Britain and North America, surpassing all other types in most applications by 1870. Such signals as electrically...

Position Light: Better Know a Signaling System - NORAC". The Position Light. Retrieved March 26, 2022. ""Tri-Light" Railroad Signals". railroadsignals.us. Retrieved...

largest integrated and diversified suppliers of railroad and transit system products and services in North America. Progress Rail markets products and services...

with the conventional (national) signal system either by connecting to the lineside railway signal or to the signalling control tower. A balise transmits...

means of signalling are used: Signal flags Hand-held signal lamps Signal whistle Arm signals Fixed light signals Fixed sound signals Signal signs Orientation...

High Speed 1 (TVM, KVB) United States of America (ACSES, ATCS, I-ETMS, ITCS) Anti Collision Device Cab signalling Dead man's switch Linienzugbeeinflussung...

are the required horn signals listed in the operating rules of most North American railroads, along with their meanings. Signals are illustrated by an...

and North Western (reporting mark CNW) was a Class I railroad in the Midwestern United States. It was also known as the "North Western". The railroad operated...