For the public transport company Sporveien Oslo AS, PJM has implemented a monitoring system to determine the track's stresses. Due to the comprehensive information gathered by the monitoring system, it is possible to get a reliable forecast of future maintenance work. The well-known magazine ZEV has had a closer look at this topic.
![zef-rail](https://pjm.co.at/en/wp-content/uploads/sites/2/2019/05/zef-rail.jpg)