Comparison of day and night vehicular speeds on horizontal curves on rural two-lane highways /
16 curves had a significantly higher speed reduction at night
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 16 curves had a significantly higher speed reduction at night accounting for light condition is not needed for operating- and nighttime speeds. However, no discernible pattern for and the speed at the midpoint of the curve. Hypothesis tests approach tangents resulted in the conclusion that a small consistency evaluation. daytime and nighttime speed reduction from the approach difference between the speed at the midpoint of the tangent discernible pattern was evident. Statistical tests of the highways. For each selected curve, daytime and nighttime large percentage of statistically significant differences in magnitude of the difference between daytime and nighttime mean speeds at the midpoint of curves were observed, no nighttime speeds at the midpoint of horizontal curves showed of daytime and nighttime speeds at the midpoint of the operating speeds were measured using piezoelectric sensors. percentage of curves exhibited a difference between daytime significantly different from nighttime speeds. Even though a Speed data was collected in each direction at the midpoint of speedbased profile modeling for horizontal alignment design speeds is small for all degrees of curvature, a variable speeds on rural, two-lane highways. However, because the tangent to the midpoint of the curve showed that five out of than during the day. The results of this research indicate that over half the curves tested had daytime speeds that were that there are some differences between daytime and nighttime the approach tangent and at the midpoint of the curve. A the results could be found. Hypothesis tests of daytime and This thesis documents the research comparing day and night vehicle's speed reduction was then calculated as the vehicular speeds on horizontal curves on rural, two-lane |
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| Item Description: | "Major subject: Civil Engineering". Vita. |
| Physical Description: | viii, 62 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 53-55. |