Speed-flow models for Singapore downtown ring roads
This study seeks to derive the best fitting scalable speed-flow model based on data collected from downtown ring roads and concurrently examine the effect of road parameters, namely the number of lanes and lane width, on speed-flow models. Traffic data was collected from pedestrian bridges over 2 do...
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2020
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sg-ntu-dr.10356-1407742020-06-02T02:31:51Z Speed-flow models for Singapore downtown ring roads Leo, Joseph Hee Chiang Wong Yiik Diew School of Civil and Environmental Engineering cydwong@ntu.edu.sg Engineering::Civil engineering This study seeks to derive the best fitting scalable speed-flow model based on data collected from downtown ring roads and concurrently examine the effect of road parameters, namely the number of lanes and lane width, on speed-flow models. Traffic data was collected from pedestrian bridges over 2 downtown ring roads, namely Scotts Road and Balestier Road, over weekdays between 0700h to 1500h over the morning peak, morning off-peak and afternoon peak periods. The extracted data was then modelled on several traffic speed-flow models. The model ultimately selected was the Generalised Drake model for its comparatively good fit across all lanes on both roads as compared to the Drake bell-curve, Greenburg’s, Greenshields’, Underwood’s, Polynomial and Quadratic models. Overall, having a greater number of lanes and does lead to a better development of steady state flow conditions. On the other hand, lane width does not significantly affect the fitting of the models. Bachelor of Engineering (Civil) 2020-06-02T02:31:50Z 2020-06-02T02:31:50Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/140774 en TR10AB application/pdf Nanyang Technological University |
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Engineering::Civil engineering Leo, Joseph Hee Chiang Speed-flow models for Singapore downtown ring roads |
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This study seeks to derive the best fitting scalable speed-flow model based on data collected from downtown ring roads and concurrently examine the effect of road parameters, namely the number of lanes and lane width, on speed-flow models. Traffic data was collected from pedestrian bridges over 2 downtown ring roads, namely Scotts Road and Balestier Road, over weekdays between 0700h to 1500h over the morning peak, morning off-peak and afternoon peak periods. The extracted data was then modelled on several traffic speed-flow models. The model ultimately selected was the Generalised Drake model for its comparatively good fit across all lanes on both roads as compared to the Drake bell-curve, Greenburg’s, Greenshields’, Underwood’s, Polynomial and Quadratic models. Overall, having a greater number of lanes and does lead to a better development of steady state flow conditions. On the other hand, lane width does not significantly affect the fitting of the models. |
author2 |
Wong Yiik Diew |
author_facet |
Wong Yiik Diew Leo, Joseph Hee Chiang |
format |
Final Year Project |
author |
Leo, Joseph Hee Chiang |
author_sort |
Leo, Joseph Hee Chiang |
title |
Speed-flow models for Singapore downtown ring roads |
title_short |
Speed-flow models for Singapore downtown ring roads |
title_full |
Speed-flow models for Singapore downtown ring roads |
title_fullStr |
Speed-flow models for Singapore downtown ring roads |
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Speed-flow models for Singapore downtown ring roads |
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speed-flow models for singapore downtown ring roads |
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Nanyang Technological University |
publishDate |
2020 |
url |
https://hdl.handle.net/10356/140774 |
_version_ |
1681059400433795072 |