Truck mounted impact attenuators used in Virginia.
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Truck mounted impact attenuators used in Virginia.

Filetype[PDF-2.28 MB]


  • English
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    • Creators:
      Noble, David F
    • Corporate Creators:
      Virginia Highway & Transportation Research Council
    • Subject/TRT Terms:
    • Publication/ Report Number:
      VHTRC 84-R33
    • Resource Type:
      Tech Report
    • Geographical Coverage:
      Virginia
    • Corporate Publisher:
      Virginia Transportation Research Council (VTRC)
    • Abstract:
      The dense, high speed traffic on some of Virginia's highways necessitates taking the extreme measure of protecting the Department's maintenance personnel by placing a blocking truck in a lane that has been closed for repairs. To protect anyone who might crash into the blocking truck, an impact attenuator (TMA) can be attached to the back of the truck. The purpose of the study reported here was to gain experience in the construction and use of the Connecticut type attenuator and to assess its acceptance by field personnel. For this study, six Connecticut type units were built in three districts. Additionally, at least 2 units were in service in the Richmond District, one of them on the Richmond-Petersburg Turnpike. An analysis of the information obtained from personnel who use the TMA's revealed that their view of its use was influenced most by the following: 1. the extent to which they understood its purpose; 2. the degree to which they perceived it to protect them on the job; 3. the attitude of their supervisors towards its use, and; 4. the extent to which they believed its use to make operations with the truck difficult and to conflict with the Department's policy on "utilization percent" for trucks. It is recommended that the Department develop a policy on the use of TMA's and guidelines for their use. Also, it is recommended that crews who use the TMA's should be given appropriate training.
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