The Railinfra Company (RIB) (formerly; Rail Services) is responsible for carrying out the daily maintenance and replacement projects on the metro and tram way. The Implementation Department uses supported services to strengthen its own occupation of employees, in particular to cut peak and ill by the use of (additional) electromechanics who carry out the work independently. The work concerns, in particular, the maintenance and repair of the overhead line, and the carrying out and monitoring of switching work on traction, energy installations and other electrical systems in the rail area of tram and metro and within stations.

maximum 191,000 hours over the maximum term of the framework agreement