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MTI releases free estimation model for TMPs

The Mineta Transportation Institute (MTI) has released a peer-reviewed research report, ‘Cost Estimate Modeling of Transportation Management Plans for Highway Projects’. The MTI’s research team has developed a systematic cost estimation modeling process for transportation management plans (TMP) that automatically estimates TMP costs for highway projects using pre-established TMP elements grouped by TMP strategies. The process will be of particular value to relevant engineers at Caltrans and similar agencies and Departments of Transportation. The TMP is generally considered a high-cost item for road projects, so it needs to be quantified. However, there have previously been no tools or systematic modeling methods to assist project and TMP engineers estimate project costs, as part of the Plans, Specifications, and Estimates (PS&E) package.

In the new research, a detailed step-by-step TMP strategy selection and cost estimate (STELCE) model was developed, considering various situations, including diverse traffic conditions and construction schedules and resources. The TMP selection procedure model takes into account the Construction Analysis for Pavement Rehabilitation Strategies (CA4PRS) analysis results as an input value, to determine Intensity Level using the Performance Attribute Matrix (PAM) method. The CA4PRS provides the major parameters to the TMP STELCE model. The resulting TMP cost estimates are input into the CA4PRS, so they can be included in the agency’s cost estimate. The TMP STELCE model classifies the project into one of five Intensity Levels, depending on the score earned through quantitative values for the project attributes.

Leader of the MTI’s research team, Dr Jae-Ho Pyeon, noted, “All state and local governments that receive federal-aid funding are required to develop and implement TMPs for all road projects. Using well-developed TMP strategies, work zone safety and mobility can be enhanced while road user costs can be minimized. In 2001, the California Department of Transportation (Caltrans) also began requiring TMPs for all planned activities on the state’s highway system. Currently, the proposed model is a prototype process model; a decision support model, based on a limited number of Caltrans TMP case study projects. The model’s accuracy and reliability can be further refined with more TMP reference projects and more case study testing. Other improvements can be made, including a more user-friendly interface, which would make the model marketable. In its current state, the developed model can be used in California and could be used in other states with a few slight modifications. It depends on the previous TMP project data availability.”

The free 54-page report is available for download at: transweb.sjsu.edu/project/1007.html

May 29, 2012

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