The capital’s public infrastructure authority, Trafikförvaltningen Region Stockholm, wanted to renew its interlocking system, a particularly critical piece of railway control equipment as it concentrates all the points, signals and level crossings in the Swedish capital.
Our Swedish teams had to find an alternative to the standard system, Ställverk 59, for which replacement parts are now hard to find.

Our client, Trafikförvaltningen Region Stockholm, is very satisfied with the results of our assignment and has asked us to test the new equipment on a prototype interlocking station on their rail network, while waiting to obtain the funding to continue the project. We remain open to other commercial opportunities of this type.
Fredrik Johansson, Signalling Specialist, SYSTRA Sweden

In search of the ideal project partner
In the end, it was the supplier Wabtec/Mors Smitt that was selected by our experts at SYSTRA Sweden, after several discussions with this supplier and calculations to check the compatibility of their equipment.