Chartered Institute of Logistics and Transport - Park Signalling, a Unipart company, has won a mp;amp;pound;3 million contract with Network Rail to produce a Design Workstation supporting Solid State Interlocking (SSI) signalling systems in the UK. Configuring SSI systems requires specialised knowledge of railway signalling principles, interlocking logic, and the SSI technology being used. According to Park Signalling, its design will replace obsolete and unsupported technology and provide rail engineers with the hardware and software needed to test, configure and make changes to SSI interlockings on a new technology platform.