Issue |
E3S Web Conf.
Volume 65, 2018
International Conference on Civil and Environmental Engineering (ICCEE 2018)
|
|
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Article Number | 09003 | |
Number of page(s) | 9 | |
Section | Traffic & Transportation Engineering | |
DOI | https://doi.org/10.1051/e3sconf/20186509003 | |
Published online | 26 November 2018 |
The Empirical Study on the Impact of Road Gradient and Truck Composition on the Toll Road Traffic Performance
1
Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, 16424 Depok, Jawa Barat, Indonesia
2
Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, 16424 Depok, Jawa Barat, Indonesia
* Corresponding author: noor.syiffa@ui.ac.id
The Jakarta Outer Ring Road (JORR) is a toll road system that circles the outskirts of Jakarta, where the purpose of this road is to reduce congestion on the street network of the city centre of Jakarta. However, the high composition of trucks in JORR resulted in congestion, and moreover it is suspected that the steep gradient of this road has contributed to this situation. This study aims to investigate the impact of road gradient on the trucks and the overall traffic performance from macroscopic view point. This study is the complement to a similar study that has been done in JORR previously, to confirm the result. The previous study was based on the Vissim simulation, while this paper will be entirely focused on an empirical study. Using the data obtained from 24-hour traffic recording on selected JORR sections that represent various gradients, traffic flow models are generated, and the effect of gradient could be assessed. The speed difference between trucks and non-trucks shows 56.2%~127% gap as the result of different gradient occurred. The overall free flow speed (uf) difference of different gradient is up to 27.3%. This result will benefit to the transport authority to justify the policy concerning the existence of trucks in the traffic flow, particularly in the condition at which trucks are regarded as a culprit of traffic congestion.
Key words: Road gradient / Trucks / Truck composition / Toll road / Jakarta Outer Ring Road
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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