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Radio frequency


It is nearly 100 years since Great Western Railways developed a system whereby a train passing a yellow/caution signal was brought to a halt, unless the driver acknowledged the signal.

During nearly 50 years of nationalised railways, it is disgraceful that the system was not extended to all regions and modified to operate at red signals.

You will recall in the report on the Rail Awards (NCE 14 September 2000) that the driver of a train involved in the Winsford accident received suitable acknowledgement.

This crash would not have happened, except for the fact that the track points on the slow line had been removed.

These were intended to stop a train passing a red signal on the slow line which would otherwise pass onto the fast line.

Similar track alterations elsewhere have increased the potential for collisions. Many simple collisions become multiple collisions as other trains crash into wreckage of the first. A radio signal transmitted on a unique frequency could be activated by crew in the first train, which could alert others in the area.

J V Caswell (M), 20 Old Wells Road, Glastonbury.

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