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http://hdl.handle.net/10773/37924
Title: | Can turbo-roundabouts and restricted crossing U-Turn be effective solutions for urban three-leg intersections? |
Author: | Fernandes, Paulo Coelho, Margarida C. |
Keywords: | RCUT Turbo-roundabouts Single-lane roundabouts Urban three-leg intersections Microscopic simulation |
Issue Date: | Sep-2023 |
Publisher: | Elsevier |
Abstract: | This research explored the potential of replacing conventional single-lane roundabouts by turbo-roundabouts and yield- and stop-controlled restricted crossing U-Turn (RCUT) at intersections located in urban corridors. A simulation approach based on a well-integrated assessment of traffic performance, emissions and driving volatility indicators of alternative intersection designs (AIDs) is therefore a major contribution of the study. The paper also addressed the impacts that several locations of the U-Turn crossovers have on travel and idling times, as well as on carbon dioxide and nitrogen oxides emissions. Traffic, pedestrian, and cyclist flow data were collected from two urban three-leg single-lane roundabouts. A microscopic simulation platform of traffic and emissions (respectively, VISSIM and vehicle specific power) was used to evaluate intersection-specific design and operations. The results indicated that turbo-roundabout and yield-controlled RCUT outperformed the existing single-lane roundabout at the two sites. Turbo-roundabout generally yielded the lowest travel times and emissions compared to the other intersections. The Yield-RCUT also performed better than the single-lane roundabout for U-Turn crossover located 100–170 m from the main intersection. Our findings bring a solid basis for academic research and transportation planners to promptly consider the implementation of AIDs and contribute to sustainable mobility in cities. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/37924 |
DOI: | 10.1016/j.scs.2023.104672 |
ISSN: | 2210-6707 |
Appears in Collections: | TEMA - Artigos DEM - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Can-turbo-roundabouts-and-restricted-crossing-U-Turn-be_2023_Sustainable-Cit.pdf | 15.74 MB | Adobe PDF | View/Open |
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