An extensive study of the dynamic performance of multitrailer vehicles, and the influence of double-drawbar dollies (C-dollies) on that performance is reported. Six vehicle configurations (five double-trailer combinations and one triple) are considered. The performance of the six vehicles is examined using a matrix of seven different converter dollies (an A-dolly and 6 C-dollies) and 15 different vehicle parametric variations (e.g., center-of-gravity, height, tire-cornering stiffness, roll stiffness, etc.). The performance quality of the vehicles is judged using measures such as rearward amplification, yaw-damping ratio, static rollover stability, offtracking, and dynamic-load-transfer ratio. The results from over 2800 computer simulation runs are used in a statistical regression analysis to produce simple methods for predicting performance numerics for A-trains based on vehicle parameters easily obtained in the field. Performance improvement factors for C-dollies are also developed. Recommendations for minimum performance standards and for C-dolly specifications are also reported. An economic analysis comparing A-dollies and C-dollies is presented. This analysis is based on data from a field survey and the literature and includes purchase, start-up, operational, and accident cost considerations. This volume, Volume III, is a Technical Summary. Volume I contains the Final Technical Report. Volume II contains Appendices A through H.

  • Corporate Authors:

    University of Michigan Transportation Research Institute

    2901 Baxter Road
    Ann Arbor, MI  United States  48109-2150

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Winkler, C B
    • Bogard, S E
    • Ervin, R D
    • Horsman, A
    • Blower, D
    • Mink, C
    • Karamihas, S
  • Publication Date: 1993-12


  • English

Media Info

  • Features: Figures;
  • Pagination: 32 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00716839
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: UMTRI-93-47-3, HS-041 400
  • Contract Numbers: DTFH61-89-C-00081
  • Files: HSL, TRIS, USDOT
  • Created Date: Feb 20 1996 12:00AM