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Small car exposure data project. Phase 1 : methodology
  • Published Date:
    1985-10-01
  • Language:
    English
Filetype[PDF-11.39 MB]


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Small car exposure data project. Phase 1 : methodology
Details:
  • Publication/ Report Number:
    FR-45-U-NHT-86-02
  • Resource Type:
  • Geographical Coverage:
  • Edition:
    Final Report
  • NTL Classification:
    NTL-SAFETY AND SECURITY-SAFETY AND SECURITY ; NTL-SAFETY AND SECURITY-Human Factors
  • Format:
  • Abstract:
    The Small Car Exposure Data Project represents the first phase of an effort to build a data

    base of exposure variables for crash-avoidance studies. Among these are: (1) vehicle make,

    model, year, body style, wheel base, weight, and horsepower; (2) driver sex and age; (3) vehicle

    headway, speed and turning maneuver; (4) permanent site characteristics; and (5) temporary

    site characteristics. Phase I data collection took place from March 15 to November 21, 1984

    in 12 towns in the western suburbs of Boston. This report is concerned with data collection

    methodology and recommendations for its improvement in Phase II.

    The most significant methodological change in this study from previous roadside exposure data

    collection efforts was the introduction of portable computers. With appropriate software,

    these lap computers permitted a single observer to record estimates of vehicle type, driver sex

    and age decile, and turning maneuver. The computer also automatically triggered a camera to

    photograph the license plate and recorded speed from a radar gun.

    In the data editing process, license plates from the film were appended to each record. From

    these plate numbers, the Registry of Motor Vehicles supplied the corresponding vehicle

    identification numbers. These were run through the VINDICATOR program to generate a file

    of output records with all of the vehicle characteristics above.

    Traffic counts and Police Accident Report data were also collected for the same area and

    time period as the exposure data. All of these data are being analyzed and intepreted in a

    report prepared by Mid-America Research Institute.

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