SSP019 01-63
Approach Locking
Synopsis
Parameters for 'comprehensive' and 'when cleared' controls defined, also release times for main and shunt routes.
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Registered
Withdrawn
Other
- Issued:
- 01/01/1963
- Published:
- 31/10/2016
- In Force:
- 01/01/1963
- Withdrawn:
- 01/03/1979
Details
Consultation Status | Closed |
Vehicle Assessment | No |
Superseded By | SSP019 03-79 |
Lead Committee | Control Command and Signalling - CCS |