Westlock Interlocking

WESTLOCK Interlocking is a Solid State Interlocking (SSI) product by 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 external 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).

Westlock Interlocking

WESTLOCK Interlocking is a Solid State Interlocking (SSI) product by 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 external 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).