00153158

Component

http://onlinepubs.trb.org...s/trr/1976/601/601-008.pdf

http://scholar.google.com...nnon&publication_year=1976

Current design and marking standards for passing and no- passing zones are based on the results of field studies conducted more than 35 years ago. Many of the assumptions used to derive these standards are not valid for current highway operations. In addition, design and marking standards are almost exclusively concerned with passing sight distance. Design standards contain no provision to establish the minimum length over which the design passing sight distance must be made available to the passing driver to constitute a safe passing zone. Marking standards indirectly set the minimum length of passing zones at 122 m (400 ft). This zone length is inadequate for the majority of higher speed passes. A review of recent research, especially studies dealing directly and design or marking practice, indicates that sufficient data are available to develop design and marking standards based on the contemparary field measurements. The results of a study on short passing zones demonstrate the safety and operational deficiences of passing zones less than 268 m (880 ft) long. Therefore, it is recommended that design and marking standards consider both passing sight distance and passing zone length. Because the design of highway geometrics should be based on analysis of subsequent highway operations, the authors recommend that design and marking standards be identical. Specific criteria for the design and marking of passing and no-passing zones are suggested. /Author/

Publication of this paper 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.

01411456

pp 45-50

1976

Transportation Research Record

0309025702

Digital/other

Figures (5) ; References (23) ; Tables (2)

Behavior; Data analysis; Data collection; Evaluation; Marketing; Mathematical analysis; Systems analysis; Transportation planning

Highways; Operations and Traffic Management

TRIS, TRB

May 31 1977 12:00AM

• AN APPROACH FOR MAXIMIZING THE CAPACITY OF SELF-SERVICE PARKING FACILITIES
• CHARACTERISTICS OF INTERSECTION ACCIDENTS IN RURAL MUNICIPALITIES (ABRIDGMENT)
• COST EFFECTIVENESS OF FREEWAY COURTESY PATROLS IN HOUSTON
• DEVELOPMENTS IN AUTOMATIC VEHICLE IDENTIFICATION DURING 1974 AND 1975
• EFFECT OF BRIDGE SHOULDER WIDTH ON TRAFFIC OPERATIONAL CHARACTERISTICS (ABRIDGMENT)
• EFFECT OF COMMERCIAL VEHICLES ON DELAY AT INTERSECTIONS
• EFFECT OF GUARDRAILS ON INTERSTATE BRIDGES ON VEHICLE SPEED AND LATERAL PLACEMENT (ABRIDGMENT)
• EFFECT OF THE ENERGY CRISIS ON EXISTING DESIGN STANDARDS
• EVALUATION OF FACTORS INFLUENCING DRIVEWAY ACCIDENTS
• HIGHWAY ACCIDENTS AT BRIDGES (ABRIDGMENT)
• OPERATING PARAMETERS FOR MAIN LINE SENSORS IN FREEWAY SURVEILLANCE SYSTEMS
• PLANNING TRANSIT FACILITY PARKING FOR THE BOSTON METROPOLITAN AREA
• ROADSIDE ENCROACHMENT PARAMETERS FOR NONFREEWAY FACILITIES (ABRIDGMENT)
• ROADSIDE HAZARDS ON NONFREEWAY FACILITIES (ABRIDGMENT)
• SINGLE POINT DIVERSION OF FREEWAY TRAFFIC
• URBAN FREEWAY CORRIDOR CONTROL MODEL (ABRIDGMENT)