State of Good Repair: Prioritizing the Rehabilitation and Replacement of Existing Capital Assets and Evaluating the Implications for Transit.

摘要

U.S. public transportation agencies face an enormous set of challenges as they seek to preserve their existing capital assets. These agencies have a wide variety of assets to maintain and in many cases, these assets have aged to a point at or beyond the recommended interval for rehabilitation or replacement. Lacking adequate funds, these operators expect they will suffer significant reductions in system reliability, which may eventually result in restricted transit service. Asset preservation is an important concern not only for older, well-established transit operators, but also for newer and smaller transit systems. Transit agencies require improved tools to make the case for needed investments in their assets and to communicate the impacts of investing at a given level. This report describes the results of a Transit Cooperative Research Program (TCRP) project related to achieving a state of good repair for transit assets, focused specifically on approaches for evaluating and prioritizing rehabilitation and replacement investments in existing capital assets. The effort involved reviewing existing state-of-good-repair practices in transit and other related industries. Based on the review, an evaluation was performed of the impacts and implications of different investment levels for rehabilitation and replacement of transit assets. The evaluation summarizes the positive and negative impacts of rehabilitation and replacement investment decisions, and describes the performance measures used to quantify those impacts.