CURVILINEAR ALINEMENT: AN IMPORTANT ISSUE FOR MORE CONSISTENT AND SAFER ROAD CHARACTERISTIC

A highway alinement design process called "curvilinear alinement" is described. It is based on a process called "relation design", which means that no more single design elements with minimum or maximum limiting values are put together more or less arbitrarily; rather, design element sequences are formed in which the design elements following one another are subject to specific relations or relation ranges. Quantitative criteria are given for evaluating the driving behaviors of motorists in the transitions between successive design elements as well as tuning the operating speed to the design speed for single design elements on two-lane rural roads. The curvilinear alinement can provide sounder, more consistent road alinements. The suggested procedure for modern highway design provides better quantifiable and more sophisticated criteria than those that already exist in western European design guidelines. It is recommended that curvilinear alinement design be evaluated for inclusion as a recommended design process in the AASHTO Green Book for two-lane rural roads.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1994/1445/1445-002.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=CURVILINEAR+ALINEMENT%3A+AN+IMPORTANT+ISSUE+FOR+MORE+CONSISTENT+AND+SAFER+ROAD+CHARACTERISTIC&author=R.+Lamm&author=B.+Smith&publication_year=1994
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1445, Cross Section and Alinement Design Issues. 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:
  • Lamm, Ruediger
  • Smith, Bob L
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 12-21
• Monograph Title: Cross section and alinement design issues
• Serial:
  • Transportation Research Record
  • Issue Number: 1445
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Alignment; Curves (Geometry); Design speed; Highway design; Operating speed; Rural highways; Two lane highways
• Old TRIS Terms: Curvilinear alignment
• Subject Areas: Design; Highways; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00675326
• Record Type: Publication
• ISBN: 0309060516
• Files: TRIS, TRB, ATRI
• Created Date: Mar 20 1995 12:00AM