Kruch Trolleybus Checkpoint put into operation at VBZ


In November of 2018, the Kruch Trolleybus Checkpoint was installed for the Zurich Public Transport Authority (VBZ). Prior to this, each of the 74 trolleybuses had to be checked once a day by one to two employees and serviced where necessary. This inspection was not only very time-consuming, but also involved a certain level of occupational risk.

By introducing the world’s first trolleybus checkpoint, Kruch succeeded in providing support for the VBZ in this regard. With the establishment of the Trolleybus Checkpoint at the VBZ Hardau garage, every trolleybus undergoes a fully automated inspection when it enters the garage.
As a result, Kruch has not only implemented a tool for simpler bus inspection at VBZ, but has also made it possible to pinpoint weak points with the utmost precision and to mitigate safety risks even more rapidly.

Positive response

Above all, the technical and economic advantages – such as low maintenance requirements and reduced monthly costs – were what convinced the customer.

“Our primary reason for using the Kruch Trolleybus Checkpoint was to save time. This enabled us not only to utilise our staff resources in a more targeted way and reduce our employees’ workload, but also to further boost the level of safety in the Zurich transport network. The implementation of the Checkpoint itself could not have gone more smoothly. We are very pleased about the joint development of this innovative project and thank you for the excellent cooperation.”

The advantages of the Kruch Trolleybus Checkpoint

  • optimises the use and replacement cycle of the sliding contacts
  • provides information as to whether any contacts are damaged or worn
  • detects even small hairline cracks, virtually imperceptible to the human eye
  • automates the daily manual inspection of the sliding contacts
  • improves work safety significantly
  • provides faster and more accurate analyses of the status of your buses than can be achieved by manual inspection
  • improves work safety substantially

How soon does the Checkpoint service pay for itself?

Based on our past experience and key figures, in the specific case of VBZ we can expect amortisation of the Checkpoint within the first year of operation.

We have also found that a maintenance contract should be regarded as essential, since this is an area that requires continuous optimisation and is linked to an online database and data connections. This means that the establishment of a Checkpoint cannot be viewed in isolation, as a fixed unit, but as a largely automated service providing streamlined bus servicing, which can best be offered through regular maintenance.

The point at which the investment costs will be recovered depends on a number of factors.  We would be more than happy to provide you with additional information about the possibilities offered by the Trolleybus Checkpoint.

You can find further information and explanatory videos here.

If you have specific questions, please feel free to contact us at +43 1 616 31 65 or by e-mail to