RESEARCH NEEDED IN GEOMETRIC HIGHWAY DESIGN

STATEMENTS WERE DRAFTED TO DEMONSTRATE THE SEPARATE AND RELATED ITEMS OR PHASES OF RESEARCH NEEDED IN THE GENERAL HIGHWAY DESIGN PROBLEM. PROBLEM STATEMENTS WERE PRESENTED FOR THE FOLLOWING LIST OF 26 SUBJECTS: (1) WIDTH AND CROSS SECTION OF A MEDIAN, (2) WARRANTS FOR HIGHWAY INTERCHANGES, (3) TRAFFIC BEHAVOIR ON A CLOVERLEAF INNER LOOP, (4) EFFECT OF PROPORTION AND CHARACTER OF COMMERCIAL VEHICLES ON GEOMETRIC DESIGN ELEMENTS, (5) PERCEPTION TIME AS RELATED TO STOPPING SIGHT DISTANCE, (6) BRAKING DISTANCES FOR REPRESENTATIVE VEHICLES, (7) EFFECT OF OPERATION OF BUSES ON URBAN ARTERIAL HIGHWAYS, (8) SPACING OF SAFE PASSING SECTIONS ON 2-LANE HIGHWAYS, (9) CORRELATION OF DESIGN SPEED, RUNNING SPEDD, OVER-ALL SPEED AND CHARACTER AND VOLUME OF TRAFFIC, (10) SPEED-CHANGE LANES FOR RIGHT TURNS, (11) PARALLEL PARKING LANES ALONG A MAJOR STREET, (12) WIDTH OF TRAFFIC LANES ON DIVIDED HIGHWAYS, (13) GEOMETRIC DESIGN OF HIGHWAY SHOULDERS, (14) REVERSE FLOW OPERATION ON MULTILANE STREETS, (15) VEHICLE DIMENSIONS AND DRIVER'S POSITION IN VEHICLE, (16) SPEEDCHANGE LANES FOR LEFT TURNS (MEDIAN LANES), (17) TRUCK SPEEDS WHEN ASCENDING LONG GRADES, (18) OPERATIONAL CHARACTERISTICS OF UNCHANNELIZED INTERSECTIONS, (19) AERIAL PHOTOGRAPHS AND MODELS AS AIDS TO PLANNING AND DESIGN, (20) OPERATIONAL CHARACTERISTICS OF DIAMOND INTERCHANGES, (21) SUITABILITY OF LEFT-HAND ON AND OFF RAMPS FOR AN EXPRESSWAY OR FREEWAY, (22) SAFETY ON LONG TANGENT SECTIONS VERSUS EASY CURVED ALINEMENT, (23) LATERAL CLEARANCE TO A WALL SECTION, (24) LATERAL OFFSET FOR VARIOUS TYPES OF CURBS, (25) LENGTH OF SAG VERTICAL CURVES, AND (26) CLIMBING LANES FOR SLOW-MOVING VEHICLES ON LONG GRADES.

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    • 49 PP, 110 REF 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:
    • Loutzenheiser, D W
  • Conference:
  • Publication Date: 1953

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  • Accession Number: 00203419
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 4 1994 12:00AM