State of Good Repair: Prioritizing the Rehabilitation and Replacement of Existing Capital Assets and Evaluating the Implications for Transit (2012) / Chapter Skim
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Pages 19-26
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19 S E C T I O N 3 3.1 Overview Transportation systems are the backbone of America: They keep our nation strong and moving. But we have not been taking good care of this resource.
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20 in the city declaring bankruptcy. New York's budget woes translated into chronic deferral of needed maintenance, rehabilitation and replacement of New York City Transit (NYCT)
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21 Figure 3-2. Theoretical and actual reliability for the NYCT R-36 fleet.
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22 The immediate impact of deferral of needed rail replacement was an increase in delays. Figure 3-3 from Kuiper's report shows the quantity of rail replaced versus delays, with the two indexed to a value of 100 in 1971, and with replacements offset three years to reflect the time required for deferral of rail replacement to impact day-to-day performance.
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23 A notable example of this issue is the case of the Douglas Branch of the Blue Line (now the Pink Line)
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24 Figure 3-5. Impacts and implications of rehabilitation and replacement actions.
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25 are only part of the story. Asset availability, reliability, and service quality ultimately impact: • Overall performance of the system (on-time performance)
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26 Impact/ Implication If Needed Rehabilitation/ Replacement Investments Are Made If Needed Investments Are Deferred System Enhancements It may be possible to make minor near-term system enhancements as part of the rehabilitation/replacement investment, though larger improvements may need be deferred. It may be possible to make system enhancements in the short term, but this may only exacerbate the challenge of preserving the system over the long term.
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