Evaluation of alignment indices in estimating tangent speeds on rural two-lane highways /
(60. 1 mph), does not statistically differ from the mean of
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1997.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (60. 1 mph), does not statistically differ from the mean of 85th percentile speeds using graphs and statistical analyses. 85th percentile speeds, 97.9 km/h (60.8 mph), in a previous alignment characteristics encountered by motorists, these alignment indices were calculated and compared to observed alignment indices, In this research, alignment indices were alignment through the use of alignment indices may provide a consistency, a speed-profile model has been developed to continue to be used as the estimate of desired speed on long controls on maximum speeds (e.g., tangents), which reduces does not consider geometric or environmental factors that may ensure design and operating-speed consistency of roads in the estimating the desired speed of motorists on long tangents. geographical locations across the United States. The has on the speeds motorists drive. Other countries, identified and developed to test their applicability in indices attempt to quantify the impact the preceding roadway influence desired speed. This thesis tested the hypothesis its effectiveness. In an attempt to ensure operating-speed long tangents of rural two-lane highways. By using previous long tangents of rural two-lane highways. The mean of 85th method of accurately estimating the speed motorists drive on model for roadways with posted speeds of 88.5 km/h (55 mph). of the speed-profile model is an estimate of the desired percentile speeds for long tangents in this study, 96.8 kni/h significant predictors of the desired speeds of motorists on specifically Germany and England, have been able to estimate Speed and alignment data were collected from different speed of motorists on long tangents. A standard value is study on long tangents of rural two-lane highways. supplement the design-speed concept. One of the components tangents of rural two-lane highways in the speed-profile that quantifying the general character of the roadway The design-speed concept has been used in attempting to the operating speeds of motorists on their roads using Therefore, it is recommended that 97.9 km/h (60.8 mph) This research indicated that alignment indices were not United States, However, this concept has no effective used in estimating the desired speed; however, this estimate |
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| Item Description: | "Major subject: Civil Engineering". Vita. |
| Physical Description: | x, 93 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |