ALIGNMENT COORDINATION IN HIGHWAY DESIGN

THE PURPOSE WAS TO STUDY THE COORDINATION OF HORIZONTAL AND VERTICAL ELEMENTS OF HIGHWAY ALIGNMENT IN ORDER TO PROVIDE SOME DEFINITIVE GUIDELINES FOR THE HIGHWAY DESIGNER. THE TECHNIQUE OF PLOTTER-DRAWN PERSPECTIVES WAS USED IN THIS STUDY. A BATTERY OF COMPUTER PROGRAMS WAS DEVELOPED THAT PROVIDED A MEANS OF RAPIDLY AND ECONOMICALLY PRODUCING PERSPECTIVE DRAWINGS OF A PROPOSED OR EXISTING ROADWAY. THE PROGRAMS PROVIDED FOR THE COMPUTATION OF HIGHWAY ALIGNMENT AND SPACE COORDINATES, THE PERSPECTIVE PICTURE PLANE COORDINATES, AND A "PLOT" PROGRAM, ALL WITH THE OBSERVER (EYE LOCATION) AT ANY ARBITRARILY SELECTED LOCATION. THE CAPABILITIES OF THE COMPUTER PROGRAM ARE DESCRIBED IN DETAIL. A LARGE NUMBER OF PERSPECTIVE DRAWINGS WERE MADE FOR A DETAILED STUDY OF THE COORDINATION OF VERTICAL AND HORIZONTAL CURVES AS WELL AS FOR THE STUDY OF THE VISUAL APPEARANCE OF SPIRAL CURVES. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1971/371/371-005.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309019842
• Supplemental Notes:
  • Sponsored by Committee on Operational Effects of Geometrics. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Smith, Bob L
  • Yotter, E E
  • Murphy, J S
• Publication Date: 1971

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: pp 47-53
• Monograph Title: Highway Design Practices
• Serial:
  • Highway Research Record
  • Issue Number: 371
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Alignment; Computer graphics; Computer programs; Curves (Geometry); Geometric design; Safety; Spirals; Tangents
• Uncontrolled Terms: Horizontal curvature; Vertical curvature
• Old TRIS Terms: Plotting
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00226212
• Record Type: Publication
• ISBN: 0309019842
• Report/Paper Numbers: HS-011 999
• Files: TRIS, TRB
• Created Date: Mar 7 1972 12:00AM