Preparation of an Expert Opinion
Siemens Mobility GmbH
Expert’s Opinion for the On-Board and Radio Equipment ZUB 2xx
Due to errors in position determination as well as of the communication via serial interfaces a new version of the operating system COSPAS was to be developed for tramway applications. For this inter alia expert’s opinions and assessments had to be drawn up by GRABAND worldwide for the onboard and radio equipment ZUB (train control system) 222c and 242 of different types on the basis of CENELEC norms.