A Review of Service Reliability Measures for Public Transportation Systems


The aim of this paper is to review various public transport reliability measures including the factors responsible for causing variability in the travel time. A four quadrant approach is used to summarize various reliability measures. These indicators use both Intelligent Transportation System (ITS) data and the stated preference data to measure reliability. Further various supply and demand side factors causing uncertainties in travel time are listed and discussed. In the end a brief case study on two routes of Bus Rapid Transit System(BRTS) of Ahmedabad is reported to apply and test the reviewed travel time measures on the ITS data.

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The authors are thankful to Ahmedabad Janmarg Limited, India for their continuous support in data collection.

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Correspondence to Ankit Kathuria.

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Kathuria, A., Parida, M. & Sekhar, C.R. A Review of Service Reliability Measures for Public Transportation Systems. Int. J. ITS Res. 18, 243–255 (2020). https://doi.org/10.1007/s13177-019-00195-0

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  • Travel time reliability
  • Public transportation
  • Reliability measures