Cab Secure Radio

Cab Secure Radio (CSR) is an in-cab analogue radiotelephone system used on parts of the British railway network. Its main function is to provide a secure speech link between the train driver and the signaller which cannot be overheard by other train drivers. In areas where CSR is used it must be the normal method of communication between driver and signaller, replacing the function of the signal post telephone. CSR will be replaced by a digital system called GSM-R.

History

CSR was first introduced in the Glasgow area in the 1970's to enable driver-only operation of trains. It was later used in the London and Liverpool areas. [cite web
url = http://www.railsigns.co.uk/sect19page1/sect19page1.html
title = Railway Signs and Signals of Great Britain
accessdate = 2008-09-14]

Functions

* Signaller can call and speak to driver.

* Driver can call and speak to signaller.

* Signaller and driver can exchange preset text messages.

* Signaller can send emergency stop messages to a particular train, or all trains in an area.

* Driver can make an emergency call to signaller.

* Signaller can speak to passengers via the train's Public Address system.

* Signaller can connect driver to the railway telephone network. [cite web
url = http://www.rgsonline.co.uk/docushare/dsweb/Get/Rail-43668/RS516.PDF
title = CSR Handbook RS/516 Issue 1
accessdate = 2008-09-14
last = Stafford
first = James
authorlink =
coauthors =
date = 2008-06-01
format = PDF
work =
publisher = Rail Safety and Standards Board
location =
pages = ch. 1.4, Types of radio call]

Use

The driver initialises the CSR with either a Train reporting number, or TOPS stock number if a train reporting number is not available. The signaller uses this number to make a call to a driver.
Each signalling area uses a different radio channel. As the train passes from area to area, the CSR changes channel automatically. Lineside signs are provided to inform driver of correct channel. Driver can change the channel manually if necessary.

Hardware

CSR cab equipment can be the Stornophone 6000 or a Siemens model. [cite web
url = http://www.rgsonline.co.uk/docushare/dsweb/Get/Rail-43668/RS516.PDF
title = CSR Handbook RS/516 Issue 1
accessdate = 2008-09-14
last = Stafford
first = James
authorlink =
coauthors =
date = 2008-06-01
format = PDF
work =
publisher = Rail Safety and Standards Board
location =
pages = p.11, Examples of the driver's CSR radio]

See also

National Radio Network (UK railways)

References