1967•Highway Research RecordRequires access
SAFETY CONSIDERATIONS IN MEDIAN DESIGN
J.W. Hutchinson, T W Kennedy
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Abstract
THE FREQUENCY, NATURE AND CAUSES OF VEHICLE ENCROACHMENTS ON MEDIANS OF DIVIDED HIGHWAYS WERE INVESTIGATED TO OBTAIN INFORMATION NEEDED IN ESTABLISHING TRAFFIC SAFETY CRITERIA FOR MEDIAN WIDTH AND CROSS SECTION DESIGN. THE EFFECTS OF MEDIAN WIDTH AND CROSS SECTION, TRAFFIC VOLUME, ROADWAY ALIGNMENT, WEATHER, ROADSIDE SIGNS, GRADE SEPARATION STRUCTURES AND OTHER FEATURES OF THE HIGHWAY AND DRIVING ENVIRONMENT WERE CONSIDERED. RELATIONSHIPS BETWEEN TRAFFIC VOLUME AND FREQUENCY AND NATURE OF VEHICLE ENCROACHMENTS ON MEDIANS ARE PRESENTED. THE RECOMMENDATIONS INCLUDE MINIMUM DESIGN REQUIREMENTS FOR SAFE STOPPING OR CONTROL OF VEHICLES IN THE MEDIAN. /AUTHOR/