The delivery of Network Rail’s £3.5 billion track renewals programme comprises of four major rail companies, Balfour Beatty Rail, Babcock, Amey-Colas and Amey.

Under this arrangement the railway network is then subsequently divided into specific geographical areas covering all of the UK’s main and branch lines.

Working with Balfour Beatty who are one of the country’s largest track renewals organisations, and Colas, RT Infrastructure Solutions (RTIS) provides highly skilled signalling support for both plain line and switches and crossings (S&C) projects on Network Rail’s infrastructure. Track renewals are undertaken during pre-organised possessions, which can range from overnight occupations of the railway, to full weekend closures and on occasions major blockades. Through careful planning and coordination with BBRIS signalling managers, RTIS provides Balfour Beatty and Colas with competent and skilled IRSE licensed signalling staff who are capable of disconnecting, re-connecting and then testing signalling assets under SMTH procedures. Track renewals possessions are normally very intense and provide the main contractor and its sub contractors with a true test of its capabilities. Under normal circumstances the possessions are kept to a minimum and are signed back into use ready for commuter traffic the very next day. Since September 2012 RT Infrastructure Solutions has worked over 213,000 man hours for Balfour Beatty and Colas, with no reported RIDDOR or major accidents upon track renewals sites.


  • Installation of new signalling track circuit equipment
  • Installation of new TPWS, AWS, Location Cases
  • SMTH reconnection and testing of DC, HVI, TI21 & Aster track circuits
  • SMTH reconnection and testing of AC, Digital TI21, Reed, Diode track circuits
  • SMTH reconnection and testing of TPWS, AWS, Treadle equipment
  • SMTH testing of IBCL & HW points machines
  • SMTH testing of filament and LED style signals
  • SMTH testing of AZLM Axle Counters
  • Signalling correlation of existing assets


Balfour Beatty Rail and Colas

Project value

£6.4 million


Sept 12 – Ongoing