Maryland motor carrier program performance enhancement.
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Maryland motor carrier program performance enhancement.

Filetype[PDF-975.79 KB]

  • English

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    • Abstract:
      Using the inspection summary data (24-1 reports) from SHA for years 2006 to 2010 and inspection and violation

      files of Motor Carrier Management Information System (MCMIS) for the same years, the Maryland State Police

      (MSP) and Maryland Transportation Authority Police (MdTAP) roadside inspections were evaluated. The

      comparison with peer states and the national trend found that the roadside inspections of Maryland are effective.

      Specifically, Maryland conducted more inspections than many other states in terms of the absolute number of

      inspections and the number of inspections normalized by population and VMT. In addition, reduction in violations in

      Maryland was noticeable during these study years, a larger drop than the national average. This trend analysis

      suggests that population of safe trucks in Maryland has been increasing gradually, at rates higher than the national

      averages. This population of safe trucks may be the result of the effectiveness of prior inspection programs in the

      state and nationally. The Integer Programming resource allocation model successfully reallocated existing resources

      in a way to maximize benefits from avoided crashes. The modeling findings suggest that the current level of

      inspections, i.e. without resource reallocation, are quite effective and generate significant benefits to Maryland

      citizens. With resource reallocation, the benefits would increase significantly. Depending on scenarios, the

      percentage increase of additional benefits gained by resource reallocation ranges between 14.58% and 28.18% for

      the MSP roadside inspection program, and between 9.01% and 22.62% for the MdTAP roadside inspection program.

      A budget increase scenario was also considered. A budget increase of 10% using current inspection capacity, and

      assuming a 40% crash reduction coefficient, would result in MSP and MdTAP increasing benefits by 2.22% and

      7.23% respectively. At the disaggregated level, the model recommends TWIS to conduct more level I and level II

      inspections, and fewer level III inspections. On the other hand, for MdTAP and MSP Roving County, an increase in

      level III inspections would have a significant impact on capturing potentially dangerous drivers who avoid fixed

      inspection locations on purpose.

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