TRUCK PATHS ON SHORT RADIUS TURNS

TEMPLATES OF TURNING TRACK WIDTHS OF A 3-S2 TYPE TRUCK TRACTOR-SEMITRAILER COMBINATION ON SHORT RADIUS TURNS WERE DEVELOPED. THE DESIGN VEHICLE WAS A 60-FOOT LONG COMBINATION WITH 38 FEET BETWEEN THE PIVOT POINT AND THE REARMOST AXLE OF THE SEMITRAILER. THESE TEMPLATES WERE DEVELOPED USING A MODEL KNOWN AS A TRACTRIX INTEGRATOR. OFFTRACKING RESULTS OBTAINED BY USE OF THIS MODEL WERE COMPARED WITH DATA DEVELOPED FROM FIELD TESTS USING ACTUAL TRUCKS. THE GOOD CORRELATION OBTAINED BETWEEN MODEL AND FIELD TESTS RESULTS CONFIRMED THE VALIDITY OF THE TRACTRIX INTEGRATOR AS A MEANS OF SOLVING OFFTRACKING PROBLEMS. TABULATED DATA FOR TOTAL TRACK WIDTHS DEVELOPED BY THE DESIGN VEHICLE ON 48, 58, 73 AND 98 FOOT RADII, CURVE DATA FOR DEVELOPING THE INSIDE LANE EDGES, AND A BASIC COMPUTER PROGRAM TO COORDINATE CURVE DATA ARE GIVEN IN THE APPENDIX.

• Corporate Authors:

  California Department of Transportation

  1120 N Street
  Sacramento, CA  United States  95814
• Authors:
  • Otte, C W
• Publication Date: 1972-5

Subject/Index Terms

• TRT Terms: Computer programs; Curvature; Field tests; Mathematical models; Offtracking; Radius; Tractor trailer combinations; Trailers; Trucks; Turning radius; Vehicle performance
• Uncontrolled Terms: Templates
• Old TRIS Terms: Radius of curvature; Truck performance; Turning path
• Subject Areas: Highways; Motor Carriers; Safety and Human Factors;

Filing Info

• Accession Number: 00222635
• Record Type: Publication
• Source Agency: California Department of Transportation
• Report/Paper Numbers: Final Rpt
• Files: TRIS, STATEDOT
• Created Date: May 15 1974 12:00AM