The first study evaluates the operation and safety of a 120-mile section of I-81 from milepost 80 to 200 (termed the Study Area) in the state of Virginia. The study demonstrated that, apart from five sections along the entire I-81 corridor in the state of Virginia, the operational characteristics are within the design level-of-service C. in terms of safety, the data suggest that the fatal crash rate along the Study Area does not appear to be higher than the national rate for similar interstate facilities. In addition, the data do not suggest any non-fatal crash safety hazards along the Study Area or for any of the Study Area segments. Furthermore, the data suggest that Study Area experiences an injury and property damage crash rate that is lower than the national average rate. The second study describes the TruckWIM framework for modeling vehicle motion along roadway sections by considering both the longitudinal and lateral forces acting on a vehicle. In doing so, the tool reflects the impact of horizontal and vertical alignment on a vehicle's longitudinal motion. The model is capable of reading Global Positioning System (GPS) (longitude, latitude, and altitude), roadway, and vehicle data. The paper demonstrates the validity of the software modeling procedures against field data and the Highway Capacity Manual (HCM) procedures. It is anticipated that by automating the design procedures and considering different vehicle and roadway characteristics on truck motion, the TruckSIM software will be of considerable assistance to traffic engineers in the design of roadways. The third study evaluates a number of lane management strategies along one of the most highly traveled roadway sections of I-81 in the State of Virginia using the INTEGRATION traffic simulation software.


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    Title :

    Addressing I-81 Transportation Needs


    Contributors:
    H. Rakha (author) / B. Yu (author) / S. Lee (author) / A. Medina (author) / K. Ahn (author)

    Publication date :

    2007


    Size :

    72 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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