Communications - Scientific Letters of the University of Zilina 2021, 23(4):A241-A247 | DOI: 10.26552/com.C.2021.4.A241-A247

Evaluation of Impact of the Operational and Technical Factors on Downtime of Municipal Buses Based on a Linear Regression Model

Joanna Rymarz ORCID...1, Anna Borucka ORCID...2, Andrzej Niewczas ORCID...3
1 Faculty of Mechanical Engineering, Lublin University of Technology, Lublin, Poland
2 Faculty of Logistics and Management Security, Military University of Technology, Warsaw, Poland
3 Motor Transport Institute, Warsaw, Poland

The objective of this study was to assess the effect of selected operational and technical factors on downtime of vehicles. The sample consisted of buses from a municipal transport company (Poland). Estimation of parameters of a linear regression model was performed. Month of failure (downtime event) and its type were used as predictors. Failures were divided into three categories: events related to the company´s operations, including vehicle failures (1) and other (organizational) problems (2), as well as failures caused by external factors unrelated to the operations of the transport company (3). The downtime was found to be significantly associated with failure type and month of failure. A linear regression model of downtime with a reduced number of impact factors, taking into account two main failure types and two main periods of their occurrence during the year, was developed.

Keywords: municipal buses; downtime; linear regression; failure

Received: September 18, 2020; Accepted: March 16, 2021; Prepublished online: September 16, 2021; Published: October 1, 2021  Show citation

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Rymarz, J., Borucka, A., & Niewczas, A. (2021). Evaluation of Impact of the Operational and Technical Factors on Downtime of Municipal Buses Based on a Linear Regression Model. Communications - Scientific Letters of the University of Zilina, 23(4), A241-247. doi: 10.26552/com.C.2021.4.A241-A247
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