00799062

Component

https://doi.org/10.3141/1701-10

http://scholar.google.com...mmes&publication_year=2000

A speed-profile model for estimating 85th percentile speeds along horizontal alignments of rural two-lane highways in the United States is documented. The model is an evaluation tool to check for speed consistency violations on alignments with design speeds less than 100 km/h (62.1 mph). The model was calibrated by using speed and geometry data collected for 138 horizontal curves and 78 approach tangents on 29 rural highways in 5 states. A preliminary evaluation suggests that the model provides reasonable estimates of the reductions in 85th percentile speeds from an approach tangent to a horizontal curve.

This paper appears in Transportation Research Record No. 1701, Design Speed, Operating Speed, and Sight Distance Issues.

English

p. 76-85

2000

Transportation Research Record

0309066808

Figures (5) ; References (17) ; Tables (3)

85th percentile speed; Design speed; Estimating; Rural highways; Two lane highways

Approach tangents; Horizontal curvature; Speed-profile models

United States

Design; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure

TRIS, TRB, ATRI

Sep 29 2000 12:00AM

• DESIGN SPEED AND OPERATING SPEED IN RURAL HIGHWAY ALIGNMENT DESIGN
• DETERMINING THE BEST METHOD FOR MEASURING NO-PASSING ZONES
• DRIVER BRAKING PERFORMANCE IN STOPPING SIGHT DISTANCE SITUATIONS
• EVALUATION OF THE PASSING PROCESS ON TWO-LANE RURAL HIGHWAYS
• GEOMETRIC DESIGN OF LOW-SPEED URBAN STREETS
• MATHEMATICAL MODELS OF VEHICULAR SPEED ON MOUNTAIN ROADS
• NEW STOPPING SIGHT DISTANCE MODEL FOR USE IN HIGHWAY GEOMETRIC DESIGN
• OPERATING SPEED ON CREST VERTICAL CURVES WITH LIMITED STOPPING SIGHT DISTANCE
• RELIABILITY APPROACH TO INTERSECTION SIGHT DISTANCE DESIGN
• SAFETY EFFECTS OF LIMITED STOPPING SIGHT DISTANCE ON CREST VERTICAL CURVES
• SIGHT DISTANCE FOR STOP-CONTROLLED INTERSECTIONS BASED ON GAP ACCEPTANCE
• SPEED REDUCTION AS A SURROGATE FOR ACCIDENT EXPERIENCE AT HORIZONTAL CURVES ON RURAL TWO-LANE HIGHWAYS
• SUMMARY OF DESIGN SPEED, OPERATING SPEED, AND DESIGN CONSISTENCY ISSUES
• TRUCK SPEED PROFILES