Reliability Evaluation Of The City Transport Buses Under Actual Conditions

Joanna Rymarz 1 , Andrzej Niewczas 2  and Jozef Stoklosa 3
  • 1 Lublin University of Technology, Lublin, Poland
  • 2 Motor Transport Instytut, Warsaw, Poland
  • 3 University of Economics and Innovations in Lublin, Lublin, Poland


The purpose of this paper was to present a reliability comparison of two types of city transport buses. Case study on the example of the well-known brands of city buses: Solaris Urbino 12 and Mercedes-Benz 628 Conecto L used at Municipal Transport Company in Lublin was presented in details. A reliability index for the most failure parts and complex systems for the period of time failures was determined. The analysis covered damages of the following systems: engine, electrical system, pneumatic system, brake system, driving system, central heating and air-conditioning and doors. Reliability was analyzed based on Weibull model. It has been demonstrated, that during the operation significant reliability differences occur between the buses produced nowadays.

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