List of Train Describers

The following list of TD areas was last updated on 4th March 2013.

The column headings are as follows:


 * ID - identity of the train describer in TD messages. This is not necessarily the same as the plated signalbox ID
 * Name - the name of the train describer
 * SIG - whether signal aspects (on/off) are available
 * RTE - whether route set indications are available
 * TRS - whether Train Ready To Start (TRTS) indications are available
 * TRK - whether track occupation (track circuit or axle counter) indications are available
 * PTS - whether points (normal/reverse) indications are available
 * LXG - whether level crossing barrier control indications are available

A TD with the name of 'TBA' indicates a train describer which is planned, but details are not yet available. A '?' in one of the six S-Class columns indicates that this detail is not currently known