Requirement: To increase the overall safety the Oberweißbacher Berg- und Schwarzatal- bahn (OBS) railway implemented an automatic train control operation sys- tem. Until that point in time the train control operation was performed by authorised operating personnel where the train controller and train drivers were entirely responsible for safety. A major target was to keep the total costs to a minimum. Solution: OBS opted for the AZB plus system from the companies V+S Ingenieursge- sellschaft and FES Bahntechnik. The central component of the system is the FAdC axle counting system, providing failsafe and reliable train detection. The data transmission is realised through a VPN tunnel within the public DSL network. Benefit: Thanks to the Ethernet interface and the easily adaptable sof

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