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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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/140774 |
| _version_ | 1824454275474915328 |
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| author | Leo, Joseph Hee Chiang |
| author2 | Wong Yiik Diew |
| author_facet | Wong Yiik Diew Leo, Joseph Hee Chiang |
| author_sort | Leo, Joseph Hee Chiang |
| collection | NTU |
| description | 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. |
| first_indexed | 2025-02-19T03:19:43Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/140774 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:19:43Z |
| publishDate | 2020 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-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 |
| spellingShingle | Engineering::Civil engineering Leo, Joseph Hee Chiang Speed-flow models for Singapore downtown ring roads |
| title | 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 |
| title_full_unstemmed | Speed-flow models for Singapore downtown ring roads |
| title_short | Speed-flow models for Singapore downtown ring roads |
| title_sort | speed flow models for singapore downtown ring roads |
| topic | Engineering::Civil engineering |
| url | https://hdl.handle.net/10356/140774 |
| work_keys_str_mv | AT leojosephheechiang speedflowmodelsforsingaporedowntownringroads |