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Development of expressway on- and off-ramp capacity models based on Malaysian expressway condition

Sanik, Mohd Erwan and Yusof, Ismail and Omar, Noorliyana and Mohamad Taher, Mohammad Nasir (2012) Development of expressway on- and off-ramp capacity models based on Malaysian expressway condition. Other thesis, Universiti Tun Hussein Onn Malaysia.


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According to the U.S. HCM 2000, a ramp is described as a length of roadways providing an exclusive connection between two roadways facility. a ramp may be connected to facilities such as freeways, two-lane highways, multilane highways, urban and suburban roads. Three geometric elements which refer to a ramp are rampfreeway junction, ramp-roadway, and ramp-street junction (TRB, 2000). Later in this introduction, the term "expressway" is used as freeway in Malaysia. In this study, the interest is on the ramp-expressway junctions which consist of on- and off-ramps. Other interests in this study are type of ramp-expressway: isolated; adjacent upstream onand off-ramp; and adjacent downstream on- and off-ramp. In order to determine level of service of a road facility, analysis of capacity has to be done to the facility. The U.S. HCM 2000 uses density as the measure of effectiveness to determine level of service at ramp-expressway. To date, there is no certain method or guideline used in Malaysia to analyse on- or off-ramp junctions especially in expressway. Study of this facility has been done by various researchers in the field of traffic engineering such as Roess (1994), Eleftriadou et al. (1995), Albanese et al. (2003), and Akram (2006). In Malaysia, there is nearly no study done on ramps for expressway except one study by Akram (2006) who develop on-ramp-expressway models with respect to local condition. However, the study was limited to several expressways in Selangor. Akram (2006) has proved that his.models are giving better prediction than the U.S. HCM 2000 on-ramp models and confirmed with respect to the actual field density. In this study, capacity models which consist of flow rate and density models for ramp-expressway are developed based on Malaysian expressway condition.

Item Type: Thesis (Other)
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ836-935 Hydraulic machinery
Depositing User: Normajihan Abd. Rahman
Date Deposited: 12 May 2015 08:45
Last Modified: 12 May 2015 08:45
URI: http://eprints.uthm.edu.my/id/eprint/6881
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