solid state interlocking in a sentence

Examples

1. The signal box at Leamington saw the first conventional use of British Rail Solid State Interlocking ( SSI ) in 1985 when control was transferred from the original Leamington North mechanical box to a new Warwick to Little Bourton, just north of Banbury railway station.
2. From the start, they controlled Solid State Interlockings ( SSIs ), a software version of the traditional relay interlocking, but existing relay interlockings may also be controlled from an IECC . The system can control as many miles of track as required, but typically around 50 100 miles.
3. The centre drives a number of Solid State Interlockings ( SSI ) and older Route Relay Interlockings ( RRI ), for example some of the relay rooms provided for the 1983 Selby Diversion, which was controlled from a separate mosaic panel inside the old 1951 box before the area was controlled by the IECC . There is also a Westlock interlocking controlling the Moorthorpe / Hickleton area.