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On investigation of traffic safety based on statistical data regarding vehicle type and road infrastructure

Fülep T., Nadai L., Rövid A.

Journal of KONES

2010

Vol. 17, No. 1

135-142

Safe traffic is a key factor for both social players and the sustainable development of the economy. The various interest groups involved in traffic each have their own role in making our roads safe. The large number of traffic accidents and their grave consequences represent a real problem all over the world (see, for instance, the incredibly crowded metropolises of Southeast Asia or the megacities of Latin-American). A successful innovative activity in this field performed on a worldwide scale contributes to solving a critical social and economic issue. Due to the more easily available European statistical data, the paper is going to present the causes of accidents and examine possible solutions. A 2001 objective of the European Union requires a 50 per cent reduction in the number of fatal road accidents by 2010. Although a number of effective measures have been implemented in the field of traffic safety, the number ofroad accidents is still unacceptably high in the EU: a total of 1.3 million accidents per year result in close to 40,000 deaths and 1.7 million injuries. There is a large body of statistical data available (bothfrom Hungary andfrom Europe) and several comprehensive researches discuss the types of accidents. Available analyses are going to made on what kind of active or passive vehicle safety systems could have helped avoid the accidents. These analyses have and still define the main directions for legislation and technical developments.

Design of redundant brake-by-wire architecture for commercial vehicles based on qualitative reliability approach

Fülep T., Oberling J., Palcovics L.

Journal of KONES

2006

Vol. 13, No. 1

9-16

This paper deals with the design problematic of the safety critical systems of future commercial vehicles. The development of these systems is mainly driven by that social demand, that the societies wants to see safer, more reliable vehicles on the roads, which can also handle more complex situations than the human driver can. The paper derives some design aspects of commercial vehicle control system from the state-of-the-art technology of an airplane, which logically leads to similar architecture. These architectures are analyzed, and a qualitative reliability approach will be shown for their design. An insight into the additional functionality of the designed brake system will be given describing those features, which are not available in systems even with higher level of pneumatic redundancy.