The social, technical and economic relevance of safety and reliability in traffic systems is increasing in all transportation sectors. This is primarily due to the increasing number of safety relevant systems in modern vehicles. With the introduction of new technologies in cars and automotive applications, more unforeseen failures may occur, which can mean high risk and great financial loss to the vehicle manufacturer. The majority (approx. 55 %) of these failures are due to malfunctioning electrical components. According to current standards, all newly approved or certified traffic systems must undergo a risk analysis. This contribution represents a comparative overview of standards and guidelines for certifying safety-relevant electrical systems found in the air, on rails, or on the road. The challenge for the automobile manufacturer is how to properly address and avoid these malfunctions and their accompanying risks. The aviation industry has addressed this problem early, by developing the software oriented standard DO-178 and the hardware oriented standard DO-254. Airplanes and other aircraft or applications can be certified based on these standards. The railway industry has likewise implemented standardization at the European level. Even so, they pursued a different approach with their orientation to the generic IEC 61508 standard. Although the IEC 61508 already has an extensive definition collection, terms in the CENELEC-standard are defined only partially in their own words. This would still be acceptable, if the definitions in the CENELEC standard series were uniformly documented. This is unfortunately not the case; there are discrepancies in the terminology explanation in the complimentary standards. The automotive industry will try to go a similar route as the railway operators and their suppliers with the implementation of the ISO WD 26262. It will likewise take the structure and basic content from the IEC 61508, in order to establish certifiable processes and to utilize the advantages of standardization. The experiences from the aviation and railway industries should form a basis, in order to develop a meaningful derivative of the EC for the automotive industry and its applications. This paper also points out the existing weak points concerning their application.


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