00812401

Component

http://onlinepubs.trb.org.../circulars/ec019/ec019.pdf

This paper develops a method for predicting the safety of arterial roads based on arterial traffic volumes, access road (i.e., driveways and intersecting streets) volumes, and access density. This procedure applies the long-established relationship between intersection accidents and the product of conflicting traffic volumes. The simplifying assumption that access roads have roughly equivalent volumes makes it possible to provide safety indices that relate only to the change in access density; these indices are generally consistent with those reported in NCHRP Report 420, "Impacts of Access Management Techniques." They show that the increase in accidents is equal to the square root of the increase in access density.

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00812391

English

13 p.

2000-12

Transportation Research Circular

References (7) ; Tables (7)

Access; Arterial highways; Driveways; Highway safety; Intersections; Spacing; Traffic crashes; Traffic volume

NCHRP Report 420

Design; Highways; Planning and Forecasting; Safety and Human Factors; I21: Planning of Transport Infrastructure; I82: Accidents and Transport Infrastructure

TRIS, TRB

Jun 5 2001 12:00AM

• A PRACTITIONER'S PERSPECTIVE ON FLEXIBLE DESIGN
• ACCESS SPACING AND TRAFFIC SAFETY
• APPLICATION OF ROAD SAFETY AUDITS TO URBAN STREETS
• ARTERIAL SPEED CALMING: MOHAWK ROAD CASE STUDY
• CALMING NEW YORK CITY INTERSECTIONS
• CITIZEN TRANSPORTATION PLANNING: A WORKING MODEL
• CONTINUOUS SPEED MEASUREMENT OF INDIVIDUAL DRIVERS ON SUBURBAN ARTERIALS
• CURB PARKING FINDINGS REVISITED
• DESIGN CONSIDERATIONS FOR EXISTING UTILITY POLES IN URBAN AREAS
• DESIGNING FUNCTIONAL STREETS THAT CONTRIBUTE TO OUR QUALITY OF LIFE
• DEVELOPING STREET STANDARDS THAT ALLOW FLEXIBILITY
• DOWNTOWN STREETS: ARE WE STRANGLING OURSELVES IN ONE-WAY NETWORKS?
• DRIVEWAY SPACING AND TRAFFIC OPERATIONS
• ECONOMIC IMPACTS OR RAISED MEDIANS ON ADJACENT BUSINESSES
• IMPACTS OF TRAFFIC CALMING
• LINKING LAND USE AND TRANSPORTATION THROUGH STREET DESIGN
• MOBILITY-FRIENDLY STREET STANDARDS FOR DELAWARE
• NEOTRADITIONAL DESIGN: MOBILITY FOR ALL AGES
• PEDESTRIAN LEVEL OF SERVICE BASED ON TRIP QUALITY
• PLANNING AND DESIGN OF A SUBURBAN NEOTRADITIONAL NEIGHBORHOOD
• PREDICTING ANNUAL INTERSECTION ACCIDENTS WITH CONFLICT OPPORTUNITIES
• PUBLIC INVOLVEMENT IN MEDIAN PROJECTS
• PUBLIC PERCEPTION OF MEDIAN TREATMENT FOR DEVELOPED URBAN ROADS
• QUESTIONABLE CONCEPTS IN NEOTRADITIONAL SUBDIVISION DESIGN
• RIGHT-TURN TREATMENT FOR SIGNALIZED INTERSECTIONS
• SPEED MANAGEMENT TECHNIQUES FOR COLLECTORS AND ARTERIALS
• SPEED PROFILES: A METHOD FOR ANALYZING SPEED ADAPTATION BY CAR DRIVERS
• STREET DESIGN GUIDELINES FOR HEALTHY NEIGHBORHOODS
• STREET SPACING AND SCALE
• THE CONVERSION OF FOUR-LANE UNDIVIDED URBAN ROADWAYS TO THREE-LANE FACILITIES
• THE SPLIT INTERSECTION: A SOLUTION FOR A CONGESTED INTERSECTION
• UNCONVENTIONAL LEFT-TURN ALTERNATIVES FOR URBAN AND SUBURBAN ARTERIALS: AN UPDATE
• URBAN ROADWAY CLASSIFICATION: BEFORE THE DESIGN BEGINS
• URBAN STREET CROSS SECTION AND SPEED ISSUES
• WEST PALM BEACH TRAFFIC CALMING: THE SECOND GENERATION