The Relationship Between Transit Asset Condition and Service Quality (2018) / Chapter Skim
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14 C H A P T E R 3 This chapter presents a framework for evaluating service quality and a proposed set of relation ships formalizing the link between asset condition and service quality. The previous chapter summarized the information from various materials reviewed as part of this task.
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Framework for Relating Transit Asset Condition and Service Quality 15 contribute to transit system unreliability compared to systems where obsolescent components are replaced. In formulating a relationship relating asset condition and quality of service, it is important to first recognize the different factors incorporated in defining service quality.
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16 The Relationship Between Transit Asset Condition and Service Quality Safety Vehicle safety as measured by accident numbers by distance. Passenger safety as measured by injury or fatality rates.
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Framework for Relating Transit Asset Condition and Service Quality 17 Asset Condition and Service Quality Relationships The measure, Effective Journey Time (EJT) , is proposed to integrate consideration of dif ferent aspects of service quality into a single overall measure and demonstrate the effects of changes in asset condition.
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18 The Relationship Between Transit Asset Condition and Service Quality Journey Time Components Table 32 summarizes the components of journey time implied by Equation 31. Actual journey time is the sum of the components listed in the table.
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Framework for Relating Transit Asset Condition and Service Quality 19 speed restrictions, thus increasing travel time. Failures of other customerfacing assets, such as elevators or escalators in stations, may result in increased instation conveyance time and the standard deviation of journey time.
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20 The Relationship Between Transit Asset Condition and Service Quality • EJT changes to account for changes to service attributes.
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Framework for Relating Transit Asset Condition and Service Quality 21 By changing the different adjustment factors and considering the three types of time, EJT can be used in several ways to analyze asset condition and service quality. For example, EJT can be used to 1.
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