Coomandook Signal Aspects

Effective from Effective to Number Year Operator Issued
6/09/2016    1535  2016  GEN  6/09/2016 
 
Coomandook Signal Aspects

Signal aspect alterations were undertaken affecting the operation of Permissive Signal 156 and Absolute Signal 16 when Absolute Signal 4 is at Stop during the crossing loop extension works.

The alterations apply to Adelaide bound movements only.

Permissive Signal 156 displays ‘Stop’, ‘Caution Normal Speed’, ‘Clear Normal Speed’ and ‘Reduce to Medium Speed’ aspects dependent on the aspect displayed on Absolute Signal 16 and the condition of the track immediately ahead of Permissive Signal 156.

Absolute Signal 16 displays ‘Stop’, ‘Low Speed’, ‘Caution Normal Speed’ and ‘Clear Normal Speed’ when the route is set for the main line and ‘Stop’, ‘Low Speed’, ‘Caution Medium Speed’ or ‘Clear Medium Speed’ when the route is set for the Crossing Loop.

Absolute Signal 4 displays ‘Stop’, ‘Caution Normal Speed’ and ‘Clear Normal Speed’.

The following Route Signalling will now apply:

For Main Line Movements with 7 and 12 Points set for the Main Line: -

When Absolute Signal 4 is at ‘Stop’, Permissive Signal 156 and Absolute Signal 16 will display ‘Caution Normal Speed’ aspects.

When Absolute Signal 4 is displaying a ‘Normal Speed’ aspect Permissive Signal 156 and Absolute Signal 16 will display ‘Clear Normal Speed’ aspects.

For Movements into the Crossing Loop with 12 Points reverse: -

When Absolute Signal 16 displays ‘Caution Medium Speed’ or ‘Clear Medium Speed’ when the route is set for the Crossing Loop Permissive Signal 156 will display a ‘Reduce to Medium Speed’ aspect.