ProRail is responsible for the maintenance and operation of the rail network in the Netherlands. They boast an incredibly busy rail network: 7,000 kilometres of track, 2,500 crossings, 7,000 railroad switches, and 400 railways stations.
Being responsible for the maintenance and operation of the rail network means that ProRail needs to control every single aspect of the infrastructure. In order to achieve this, ProRail makes use of technical drawings that describe each aspect of the infrastructure.
Part of this infrastructure is railway signalling. Railway engineers use specialised software to create and validate all technical drawings in this area. For example, the software helps checking whether the drawings meet the comprehensive and rigorous drawing and design rules. This software is where SIG was specifically involved in.
ProRail makes use of the services of RIGD-LOXIA, a company that develops the software to make and modify the drawings for railway signalling. However, the responsibilities of this software and the resulting drawings were far-reaching: security, safety, operational costs—there was a lot at stake.
There was also a need to change the foundation of the software, but that was only possible after achieving a substantial higher quality level. ProRail and RIGD-LOXIA needed to ensure the software was of the highest quality to achieve their goals, and SIG was asked to help with the quality assessment and improvement.