A certain type of train I drive has a panel for communications, with buttons to select which system to connect the handset to. There are buttons for the public address, the crew call, the passenger alarm and the GSM-R radio. But on a few of the trains there is an extra button which is labelled "TSB Radio". I have asked my instructor and he didn't know about it other than we don't use it. I've also asked a few other folk and have been told it is a system some other train companies down south use. Someone suggested it might stand for "Train Safety Broadcast".
I've googled it but couldn't find anything that seemed relevant or likely. So does anyone here know about TSB Radio and where it's used?
I've googled it but couldn't find anything that seemed relevant or likely. So does anyone here know about TSB Radio and where it's used?