both-way signalling
1Signalling block system — Signalling block systems enable the safe and efficient operation of railways, so as to avoid collisions between trains. Block systems are used to control trains between stations and yards, and not normally within them. Any block system is defined …
2Signalling theory — Within evolutionary biology, signalling theory refers to a body of theoretical work examining communication between individuals. The central question is when animals with conflicting interests should be expected to communicate honestly .… …
3Signalling (economics) — In economics, more precisely in contract theory, signalling is the idea that one party (termed the agent ) conveys some meaningful information about itself to another party (the ). For example, in Michael Spence s job market signalling model,… …
4Signalling Connection Control Part — The Signalling Connection Control Part (SCCP) is a network layer [ [http://www.itu.int/T REC Q.1400/en/ ITU T Recommendation Q.1400] .] protocol that provides extended routing, flow control, segmentation, connection orientation, and error… …
5Railway signalling — Not to be confused with Railway signal. A gantry of British semaphore signals seen from the cab of a steam locomotive Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being… …
6Token (railway signalling) — A token being offered by a signalman on the Keighley and Worth Valley Railway …
7Cab signalling — is a railroad safety system that communicates track status information to the train cab (driving position), where the engineer or driver can see the information. The simplest systems display the trackside signal aspect (typically, green, yellow… …
8Australian railway signalling — Just as the railways of Australia has suffered issues from incompatible rail gauges, the different states have tended to go their own way regarding railway signalling practice.New South WalesThe signalling system in New South Wales consists… …
9German railway signalling — Railway signals in Germany are regulated by the Eisenbahn Signalordnung (ESO, railway signalling rules). There are several signalling systems in use: History Reichsbahn Originally every rail company had its own signalling system. After these… …
10UK railway signalling — The railway signalling systems used across the majority of the United Kingdom rail network use lineside signals to advise the driver of the status of the section of track ahead. Most lineside signals are in colour light form, but a significant… …
