Description, Validation and Use of a Model to Estimate Speed Profile of Heavy Vehicles in Grades

Børnes, Vilhelm; Aakre, Arvid

doi:10.1016/j.sbspro.2011.04.462

Cited by 6 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies about traffic performance associated to the road geometry condition, especially the road gradient, have been widely done. It shows the speed of the heavy vehicle in the uphill grade is slower than passenger cars [1]. This speed difference created delays and reduce the traffic performance of the road [2].…”

Section: Introductionmentioning

confidence: 99%

The Empirical Study on the Impact of Road Gradient and Truck Composition on the Toll Road Traffic Performance

Nahry

Fadillah

2018

E3S Web Conf.

View full text Add to dashboard Cite

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 nontrucks 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.

show abstract

Section: Introductionmentioning

confidence: 99%