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Case Study: Trackside Obsolescence


Phixos was asked to address the Obsolescence of trackside DSPs used by TFL to determine train location and as a result maintain safe fixed blocks of track between trains. This was several discrete projects, initially to port functionality in assembler to a new DSP and provide all recertification evidence to EN 50128 SIL4 proving identical performance and functionality. This was followed by an upgrade of this functionality to primarily utilise the newer faster DSP and take this newer higher performing implementation through certification to EN 50128 SIL4