Relationship between design speed and operating speed at horizontal curves on suburban arterials /
85th percentile speed on curves increased as curve radius
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 85th percentile speed on curves increased as curve radius and curves. The results indicated that the 85th percentile arterials, the 85th percentile driver usually exceeds the associated with these curves. Two primary independent Comparisons were made between design and operating speeds for curves and speeds on tangents probably caused the poor curves on suburban arterials. Lack of information and the curvilinear relationship exists between curve radius and 85th design speed and corresponding side-friction factor on curves examine their effect on 85th percentile speeds on tangents horizontal curve sections to examine driver behavior identified and reviewed to decide their appropriateness for inclusion in the study. The experimental design included a increased. The results also show that approach density is mean speed reductions. The combined variability of speeds on Much research has been conducted in recent years to examine on current design practices on suburban four-lane arterials. percentile speed on curves. For the curves examined, the percentile speed on curves. It was determined that a previous research has focused on rural two-lane highways and procedure for collecting speed data on both tangent and reductions at curves. Previous research suggests that mean regression results do not indicate a statistically relationship. Additional analyses were performed to examine research has considered the problems related to horizontal results of previous studies prompted this research focusing results, given the small number of sites examined. Roadways of the suburban arterial functional class were significant effect of curve radius and approach density on significant in contributing to the explanatory power of the speed reductions decrease as curve radius increases. The speeds on tangents decreased as approach density increased. suggested that curve radius is a good predictor of 85th tangent and horizontal curve sections. The majority of the curves examined. For the comparisons made on suburban the effect of curve radius and approach density on mean speed The evaluations of driver speed behavior on horizontal curves the relationship between design speed and operating speed at throughout this study. Regression analyses were performed to urban residential streets and collectors. Little if any variables, curve radius and approach density, were examined with inferred design speeds less than 70 km/h (43.5 mi/h). |
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| Item Description: | "Major subject: Civil Engineering". Vita. |
| Physical Description: | xi, 65 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |