WESTLOCK Interlocking is a Computer-based interlocking (CBI) product now sold and maintained by Siemens Mobility Limited, following their purchase of Westinghouse Rail Systems.
Westlock builds on many of the features that made SSI popular in the United Kingdom. This includes re-use of SSI's programming language and its track-side hardware.
In addition to backwards compatibility with SSI, Westlock provides additional capacity. This is currently estimated to be around four times that of an SSI, giving it the capability to control over 300 Signalling Equivalent Units (SEUs).
Leamington Spa was the test site for Westlock, and was its first operational site. It was also SSI's test site more than 20 years earlier.
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WESTLOCKInterlocking is a Computer-based interlocking (CBI) product now sold and maintained by Siemens Mobility Limited, following their purchase of Westinghouse...
and tracks interlocked together are sometimes collectively referred to as an interlocking plant or just as an interlocking. An interlocking system is designed...
a variety of names including signal box (International and British), interlocking tower (North America) and signal cabin (some railways e.g., GCR). Currently...
Beginning around the 1930s, electrical relay interlockings were used. Since the mid 1980s, new interlocking systems have tended to be of the electronic...
Solid State Interlocking (SSI) is the brand name of the first generation processor-based interlocking developed in the 1980s by British Rail's Research...
of an interlocking and 20 mph when not in the limits of an interlocking. This is used for trains negotiating complex trackwork at interlockings. Restricted...
2022 at the Wayback Machine The application of Smart Data Services in interlocking systems - Data Capture Unit Archived 21 January 2022 at the Wayback Machine...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
What made CTC machines different from standard interlocking machines and ABS was that the vital interlocking hardware was located at the remote location...
applications by 1870. Such signals as electrically operated automatic and interlocking signals were widely adopted in the U.S. After 1908 with the advent of...
a runway crossing on the Belfast–Derry railway line. The runway was interlocked with conventional railway block instruments to the control tower. Scotland:...
whilst the interlocking proves sufficient elements of the junction-indicator are lit before clearing the main aspect. With route relay interlocking the proving...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
building, known as a signal box (UK) or interlocking tower (US), and eventually they were mechanically interlocked to prevent the display of a signal contrary...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
trailing, manually controlled level crossing, neutral sections, or other interlocking functions. It is standard practice to have an overlap after the signal...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
any speed restrictions pertaining to the train's route through said interlocking. Speed information acquired in this fashion will be displayed on the...
Integrated Electronic Control Centre Interlocking Lever frame Rail operating centre Solid State InterlockingWestlockInterlocking Signals Application of railway...
on information received from the trains, route setting, control and interlocking, train interval regulation, and boundary control and train entry/exit...
little requirements for the underlying interlocking, hence it can be applied even on lines with mechanical interlockings as long as LEUs can read respective...
The token is then transmitted to the train by radio. The Solid State Interlocking controlling the system prevents the issue of any token permitting conflicting...
to enter the branch, and once the train has passed that signal, the interlocking will hold it at 'danger' (and the signal cannot be cleared a subsequent...
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