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Meet us at AfricaCom 2018!

Expandium will be attending and exhibiting at AfricaCom 2018, the 13-15 November 2018, in..

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Expandium alongside with Prow at GITEX 2018

Expandium will be at GITEX Technology Week 2018, the 14-18 October 2018 in Dubai UAE with its partner Prow.

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Meet Expandium at Innotrans 2018

Meet our team at the event the 18-21 September 2018 in Berlin...

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Railway Operators



ERTMS onsite testing is well known to be mandatory, expensive and complex by design.

TestOBU.SIL0 is a cost-effective ERTMS pre-test solution which ensures ERTMS lines validation for companies and operators of the railway industry.

Compared to a SIL4 EVC solution, TestOBU.SIL0 is an easy-to-operate, open-source and cost-effective solution which has been designed to be used totally unattended, enabling its users to perform more tests in less time. It:

  • Lowers the costs of ERTMS tests
  • Fits any vehicle
  • Doesn’t require re-homologation
  • Performs more tests in less time
  • Immediately diagnoses test errors root cause (onboard or trackside)


TestOBU.SIL0 includes several components:



Figure: ERTMSFormalSpecs by ERTMS Solutions


ERTMSFormalSpecs is a software tool, specifically designed by ERTMS Solutions to formally model ERTMS requirements, both for trainborne and trackside systems.

ERTMSFormalSpecs is a complete EVC software, highly flexible and transparent.


EDOR Probe

Figure: Expandium's Unattended Probe


A solution derived from Expandium’s Unattended Probe Solution, this on-board GSM-R system provides rich diagnostic information for ERTMS Solutions’ ERTMSFormalSpecs. The probe can be remotely operated and doesn’t require maintenance.

For more information about the solution and for specific questions, please contact us.