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BLS – LOPAS mobile app for the locomotive crew

All important information and resources for the locomotive crew in one application: LOPAS is a modern and portable solution for displaying shift plans and schedules.


With LOPAS (locomotive personnel assistance), the BLS locomotive crew can view staff planning and display a specific train journey with all the relevant information. \ The mobile application can also receive recommendations for drivers from adaptive control, a system developed by SBB to avoid unscheduled stops.


In the initial phase, our user experience studio We are Cube examined the concept, created mock-ups and carried out usability tests with train drivers. This enabled operation to be optimised, resulting in a very intuitive and simple design. The implementation phase took into account the specific needs and requirements of the locomotive crew during the journey in the driver’s cab: 

  • Offline availability of data (settings, rotas and schedules)
  • Encryption of offline data
  • Login only once per day
  • Screen must not dim in schedule (during train journey)
  • Simple brightness control via gestures
  • Daytime and night-time view

During the implementation phase, drivers had the chance to test a beta version of the application in the field as part of a pilot run. Feedback and requests from drivers were evaluated on an ongoing basis and implemented swiftly.


BLS AG was founded in 2006 and connects people, regions and places. As one of the largest transport companies in Switzerland, it operates an extensive network in regional passenger rail.
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