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Operational Evaluation of Right Turns Followed by U-Turns (4-Lane Arterials) as an Alternative to Direct Left Turns.
| 题名： | Operational Evaluation of Right Turns Followed by U-Turns (4-Lane Arterials) as an Alternative to Direct Left Turns. |
| 作者： | LIU, P.; LU, J. |
| 关键词： | *U-turns-; *Left-turns-; *Signalized-intersections.;Traffic-safety; Travel-time; Data-collection; Data-analysis; Recommendations-; Transportation-safety; Delay-; Weaving-conflict; Conflict-rates; Operational-impacts; Florida-. |
| 摘要： | Florida uses restrictive medians and directional median openings to manage left turns and crossing movements on multilane highways. Left turn egress movements from driveways or side streets would be replaced by turning right onto the major road and then making U-turns at downstream median openings or signalized intersections. One of the public concerns regarding this treatment is that drivers making a right-turn followed by a U-turn (RTUT) could experience much longer delay and travel time than those who would otherwise make a direct left turn (DLT). This study analyzed the operational effects of a widely used access management treatment: Right turn followed by U-turns on alternative to direct left turns. The focus of this research was on the operational effects of U-turns at 4-lane arterials. Data were collected on sixteen selected street segments in the Tampa Bay area in Florida. A total of more than 600 hours of traffic data were collected. |
| 报告类型： | 科技报告 |
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