Performance of non-priority intersections under mixed traffic conditions based on conflict streams analysis

Prasetijo, Joewono and Wu, Ning and Ambak, Kamarudin and Sanik, Mohd Erwan and David Daniel, Basil and Hadipramana, Josef (2016) Performance of non-priority intersections under mixed traffic conditions based on conflict streams analysis. Transportation in Developing Economies, 2 (2).

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Abstract

Conflict method is regarded as a viable solution for the drawbacks in the gap-acceptance approach. It has been used for the capacity analysis of unsignalized intersections, which includes the two-way stop-controlled, and the all-way stop-controlled types. This method is now applied for the capacity estimation of vehicular streams at a non-priority intersection, where gap-forcing, poor lane discipline, violation of priority rule, and heterogeneous traffic co-exist. However, there are some issues encountered when applying the conflict method for non-priority intersection analysis, particularly with the occupation time and heterogeneous traffic. The concepts developed for capacity estimation have considered the blocking effect from all possible conflicting streams. Therefore, the additional concept with volume portion, Pn,i is introduced. The probability of non-blocking traffic streams and the portion of consumed shared capacity by the subject stream are analyzed. The portion concept, Pn,i provided a more realistic estimation. The proposed approaches generated high capacity values, even though the observed intersections have near-saturation traffic. A high percentage of small vehicles occupied the lateral lane space, which is permitted by gap-forcing and poor lane discipline, apart from their smaller footprint.

Item Type:Article
Uncontrolled Keywords:Mixed traffic; unsignalized intersection; conflict steams; capacity
Subjects:T Technology > TE Highway engineering. Roads and pavements
Divisions:Faculty of Civil and Environmental Engineering > Department of Infrastructure and Geomatic Engineering
ID Code:8528
Deposited By:Mr. Mohammad Shaifulrip Ithnin
Deposited On:21 Jun 2017 11:44
Last Modified:21 Jun 2017 11:44

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