Signalling Notices

NOTE: that the Sectional Appendix 'Table A' and Local Instructions for the whole of the West Highland lines, incorporating the alterations resulting from the RETB commissioning are also published in the Special Notice.

OPENING ARRANGEMENTS

The altered permanent way and signalling arrangements described herein will be brought into use on Sunday 27 March, 1988.

DESCRIPTION OF SCHEME

Garelochhead, Glen Douglas, Arrochar & Tarbet, Ardlui, Crianlarich, and Dalmally will be closed as block posts and working by the Electric Token Block System on the routes Craigendoran to Tyndrum Upper, and Crianlarich to Taynuilt will be dispensed with. Craigendoran box will control the area between Craigendoran and Helensburgh Upper. Banavie signalling centre will control the area between Helensburgh Upper and Tyndrum Upper, and between Crianlarich and Taynuilt. Tyndrum Upper will be renamed Upper Tyndrum, the signal box will control the Up loop and Banavie SC will control the Down loop.

METHOD OF WORKING

The line between Bridge of Orchy and Upper Tyndrum Up loop stop board will be worked in accordance with the Electric Token Block System controlled by Upper Tyndrum box. The line between Oban and Taynuilt Up loop stop board will be worked in accordance with the Electric Token Block System controlled by Taynuilt box.

The line between Craigendoran and Helensburgh Upper station will be worked in accordance with the Track Circuit Block System controlled from Craigendoran box. The line between Helensburgh Upper station and Upper Tyndrum Down loop stop board, and between Crianlarich and the Down loop stop board at Taynuilt will be worked in accordance with the Radio Electronic Token Block System, controlled from Banavie signalling centre, with token exchange points at:-

All ground frames will be controlled by the Annett's key provided on each locomotive and engineer's machine. Shut-in facilities will be provided at each ground frame operated siding.

All lineside telephones situated between former block posts will be removed.

Emergency BT telephones to Banavie SC will be provided at Garelochhead, Glen Douglas, Arrochar, Ardlui, Crianlarich, Upper Tyndrum, Tyndrum Lower, Dalmally, and Taynuilt.

SIGNALLING ARRANGEMENTS

Craigendoran

The token exchange stool at Criagendoran box will be removed.

Helensburgh Upper

A new Up direction two aspect colour light signal, capable of displaying a red or green aspect, will be provided on the single line at the Craigendoran end of Helensburgh Upper platform on left of drivers. The signal, controlled by Craigendoran box will be plated C652 and apply To signal C640. Associated A.W.S track equipment and a telephone with a diagonal black and white striped sign will be provided. A notice board worded "End of Radio Token Working" will be provided at signal C652. An Up direction reflectorised distant board will be provided on left of drivers, 1430 yards from and on the approach to signal C652. Associated A.W.S track equipment will be provided.

A Down direction notice board worded "Stop - Obtain Token and Permission to Proceed", with an associated board worded, "Radio Token Working" will be provided at the Garelochhead end of Helensburgh Upper platform, on left of drivers. Associated A.W.S track equipment will be provided. A Down direction reflectorised distant board will be provided on right of drivers 700 yards from and on the approach to the notice boards. Associated A.W.S track equipment will be provided. A double-sided Station limits board will be provided 300 yards on the Garelochhead side of the notice boards.

Glen Douglas

The following supplementary boards will be provided:-

Ardlui

The following supplementary boards will be provided:-

Crianlarich

The plungers previously provided for the use of the signalman at the north end of the station at the end of the platform ramp, associated with the Down loop and Up loop "Point set" indicators, two plungers on each indicator post, will now become driver operated, under the instruction of the signalman at Banavie SC, as follows:-

(See Sectional Appendix, Local Instructions, as amended in this Notice, for operating instructions).

An override switch for the junction points, to be operated under the instructions of the signalman at Banavie SC, is located in a lockfast box beside the junction points.

The double-sided Station limits board located on the approach side of the Up direction branch "Points set" indicator will become single-sided, facing to Down direction trains. An additional single-sided Station limits board, facing to Up direction trains, will be provided 150 yards on the Dalmally side of the existing board

The Up direction board worded "Stop unless Permission to Proceed Obtained" situated on the branch line will be removed.

The 2-lever ground frame at the exit of the Timber Siding will become a 3 lever ground frame released by Annett's key. The Timber Siding will be redesignated Crianlarich Lower Siding.

Upper Tyndrum

The RCE siding will be secured out of use until further notice.

The following additional notice boards will be provided:-

Tyndrum Lower

The following boards will be provided, on left of drivers except where otherwise stated:-

Taynuilt

The following additional notice boards will be provided:-

RADIO CHANNELS

The extent of the area covered by each radio channel is as follows:-

Renaming of block post and junction

Mallaig Jn signal box and Mallaig Jn will be renamed Fort William Junction signal box and Fort William Junction respectively.