APPENDIX PATH OF VEHICLES ON CURVES AND MINIMUM WIDTH OF TURNING LANES

DIFFERENCES ARE PRESENTED IN THE PRESENT TABLES FROM THE 1946 TABLES OF THE PATH OF VEHICLES ON THE FOLLOWING ASPECTS: THE RADIUS OF TURNS, THE SPIRALING CURVES ON TURNS, WIDTH OF WHEEL PATH, MINIMUM DESIGN FOR TURNING LANES, MINIMUM DESIRABLE RADIUS FOR TRUCK TURNS, TRANSITIONS TO WIDTH OF PAVEMENT ON TURNS, AND LOGGING TRUCKS. ALL TABLES HAVE BEEN EXTENDED TO A STEERING RADIUS OF 500 FEET. A NEW TABLE HAS BEEN ADDED SHOWING DATA FOR A 35-FOOT BUS WITH A 22-FOOT WHEEL BASE. TWO TABLES HAVE BEEN ADDED SHOWING THE GREATEST WIDTH OF WHEEL PATH REACHED BY THE SEMITRAILER S/ 50/18 ON TURNS THROUGH CENTRAL ANGLES OF 10 DEGREES TO 270 DEGREES, ONE TABLE IS FOR CIRCULAR CURVES, THE OTHER FOR SPIRAL CURVES. AN EXPLANATION IS PRESENTED OF TABLES AND SKETCHES.

• Supplemental Notes:
  • No 72, pp 23-49, 20 TAB

Subject/Index Terms

• TRT Terms: Buses; Curvature; Highway design; Logging trucks; Pavements; Radius; Tables (Data); Tractor trailer combinations; Trailers; Trucks; Turning lanes; Vehicle dynamics; Width
• Uncontrolled Terms: Vehicle path
• Old TRIS Terms: Pavement width; Radius of curvature; Wheel path
• Subject Areas: Design; Highways; Motor Carriers; Pavements; Public Transportation;

Filing Info

• Accession Number: 00203364
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Dec 9 1994 12:00AM