You are here: Wiki > start > usertrack > glossary > spt

Table of Contents

SPT (Signal Post Telephone)

SPT (Signal Post Telephone)

A telephone fixed at or close to a signal, to allow the driver to call the signaller when he/she is detained at a signal, to pass messages, or to report an emergency.

Some areas have CSR and, now becoming more widespread, GSM-R .


Last edited by GeoffM on 15/09/2016 at 03:00