Extent of traffic shockwave propagation induced by midblock U-turn facilities

The aim of study is to determine the extent of traffic shockwave propagations induced by midblock U-turn facilities. Based on the hypothesis that shockwave would result from U-turning at midblock facility, 24 hour data were collected which is volume and speed at two sites in FT005 Skudai – Pontian h...

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Main Author:	Jailani, Nurul Farhana
Format:	Thesis
Language:	English
Published:	2013
Subjects:	HE Transportation and Communications
Online Access:	http://eprints.utm.my/id/eprint/33786/5/NurulFarhanaJailaniMFKA2013.pdf
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spelling	my-utm-ep.337862017-09-11T08:00:36Z Extent of traffic shockwave propagation induced by midblock U-turn facilities 2013-01 Jailani, Nurul Farhana HE Transportation and Communications The aim of study is to determine the extent of traffic shockwave propagations induced by midblock U-turn facilities. Based on the hypothesis that shockwave would result from U-turning at midblock facility, 24 hour data were collected which is volume and speed at two sites in FT005 Skudai – Pontian highway, Malaysia. The two sites are denoted as site A and site B. The study of highway capacity is the most important part in the identification of road performance. Any change made at the roadway for example installing a midblock U-turn facilities would result in highway capacity loss.There are mainly three causes of capacity loss which are due to the road condition itself, due to ambient and due to the traffic operation. When capacity loss happen, it would lead to traffic shockwaves. Traffic shockwave is a motion of propagation of a change in density and flow.When shockwaves happen, it would lead to reduction of roadway level of service. Speed, fow and density for with and without midblock U-turn facility are estimated using Greenshields Model. All data was collected using Automatic Traffic Counters (ATC). Shockwave velocity propagation with and without midblock U-turn facility were estimated by determining and comparing the capacity and density of roadway. Direct empirical capacity estimation methods are use to estimate capacity of roadway. Results shows that there is significant shockwave velocity propagation happen on the exit of the U-turn midblock facility which is about -35.1 km/hr. While a minor shockwave happens at the approaching of the U-turn. This study concluded that midblock U-turn facilities will induce traffic shockwave that may lead to road accidents. 2013-01 Thesis http://eprints.utm.my/id/eprint/33786/ http://eprints.utm.my/id/eprint/33786/5/NurulFarhanaJailaniMFKA2013.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:72708?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	HE Transportation and Communications
spellingShingle	HE Transportation and Communications Jailani, Nurul Farhana Extent of traffic shockwave propagation induced by midblock U-turn facilities
description	The aim of study is to determine the extent of traffic shockwave propagations induced by midblock U-turn facilities. Based on the hypothesis that shockwave would result from U-turning at midblock facility, 24 hour data were collected which is volume and speed at two sites in FT005 Skudai – Pontian highway, Malaysia. The two sites are denoted as site A and site B. The study of highway capacity is the most important part in the identification of road performance. Any change made at the roadway for example installing a midblock U-turn facilities would result in highway capacity loss.There are mainly three causes of capacity loss which are due to the road condition itself, due to ambient and due to the traffic operation. When capacity loss happen, it would lead to traffic shockwaves. Traffic shockwave is a motion of propagation of a change in density and flow.When shockwaves happen, it would lead to reduction of roadway level of service. Speed, fow and density for with and without midblock U-turn facility are estimated using Greenshields Model. All data was collected using Automatic Traffic Counters (ATC). Shockwave velocity propagation with and without midblock U-turn facility were estimated by determining and comparing the capacity and density of roadway. Direct empirical capacity estimation methods are use to estimate capacity of roadway. Results shows that there is significant shockwave velocity propagation happen on the exit of the U-turn midblock facility which is about -35.1 km/hr. While a minor shockwave happens at the approaching of the U-turn. This study concluded that midblock U-turn facilities will induce traffic shockwave that may lead to road accidents.
format	Thesis
qualification_level	Master's degree
author	Jailani, Nurul Farhana
author_facet	Jailani, Nurul Farhana
author_sort	Jailani, Nurul Farhana
title	Extent of traffic shockwave propagation induced by midblock U-turn facilities
title_short	Extent of traffic shockwave propagation induced by midblock U-turn facilities
title_full	Extent of traffic shockwave propagation induced by midblock U-turn facilities
title_fullStr	Extent of traffic shockwave propagation induced by midblock U-turn facilities
title_full_unstemmed	Extent of traffic shockwave propagation induced by midblock U-turn facilities
title_sort	extent of traffic shockwave propagation induced by midblock u-turn facilities
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2013
url	http://eprints.utm.my/id/eprint/33786/5/NurulFarhanaJailaniMFKA2013.pdf
_version_	1747816184800083968

Extent of traffic shockwave propagation induced by midblock U-turn facilities

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