Performance evaluation of the HCM 2010 platoon dispersion model under midblock pedestrian and truck traffic friction conditions

Forde, Albert; Daniel, Janice

doi:10.1016/j.jtte.2017.04.003

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…The All-Way Stop-Controlled (AWSC) module was used for the scenario of a road junction without traffic lights (i.e., a non-signalized intersection), and the Streets module was used for other scenarios in HCS. The road speed limit was uniformly set at 60 km/h, and running speed was automatically calculated according to a platoon dispersion mode (Forde and Daniel, 2017). All signals cycles were 80s and completely synchronous, and the duration of the green light and yellow light for the study road was always set to a half cycle.…”

Section: Paired Comparisons Of Scenariosmentioning

confidence: 99%

Influence of urban road characteristics on traffic noise

Lü

Kang

Zhu

et al. 2019

Transportation Research Part D: Transport and Environment

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Urban road networks significantly influence traffic noise. However, existing studies have neglected the causal chain between road characteristics and traffic noise; thus, clarity on their influencing mechanisms is lacking. In this study, structural equation models were developed to explore the mediated effect of road characteristics on traffic noise through traffic flow using data from field measurement in Dalian City, China; paired comparisons of scenarios though microscopic and macroscopic traffic simulations were performed for further analysis. The results show that lane number influences traffic noise mainly in terms of the number of vehicles in a group (NVG). More lanes indicate increased traffic demand due to connected urban land, which increases the NVG and, in turn, increases noise intensity but decreases noise amplitude. The influence of road segment length (RSL) on traffic noise mainly depends on the suppression effect. A longer RSL allows for higher vehicle speeds, leading to increased noise intensity and reduced noise amplitude. This also indicates that traffic flows disperse more easily, decreasing the NVG and, in turn, reducing noise intensity and increasing noise amplitude. Road junctions (RJ), which are classified according to the presence or absence of traffic lights, have significant direct effects on both noise intensity and noise amplitude, which are both likely to increase as drivers accelerate or decelerate in the middle of the road segment. These findings provide a reference for local governments and urban planners when working to improve quality of life in urban areas.

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Section: Paired Comparisons Of Scenariosmentioning

confidence: 99%

Influence of urban road characteristics on traffic noise

Lü

Kang

Zhu

et al. 2019

Transportation Research Part D: Transport and Environment

View full text Add to dashboard Cite

show abstract

“…Many kinds of research focus on the dispersion of vehicle flow from the perspective of optimization; For example, Forde and Daniel [8] evaluate the performance of the HCM platoon dispersion model under friction and no friction conditions and prove the HCM platoon dispersion model performs well under no friction traffic condition, but not under friction traffic condition. Zhang et al [9] studied a new macrotraffic model considering the continuous delayed optimal flow.…”

Section: Literature Reviewmentioning

confidence: 99%

Research on Platoon Dispersion Delay of Traffic Flow considering Coordinated Control

Liu

Zhang

Wang

2021

Journal of Advanced Transportation

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To improve the traffic capacity and reduce the delay of signalized intersections, the delay of coordinated control intersections is studied. Based on the freedom and randomness of the speed change and considering the delay problem caused by the discrete behavior, the authors deduced a new delay model. Firstly, by analyzing the kinematic behavior of traffic flow under coordinated control, it is found that traffic flow reaches the downstream intersection in two different forms. The two forms were as follows: the tail vehicles of discrete traffic flow were truncated and the front vehicles of discrete traffic flow were stopped. Then, the authors deduced the new delay model by analyzing the two conditions. Finally, the delay of the two cases is analyzed, which can be used as the basis for setting the phase difference between coordinated control intersections. The correctness of the model is verified by designing two example coordinated control intersections under unsaturated flow with MATLAB. Results show that the discrete traffic flows will have different impacts on delay or traffic efficiency when they arrive at the downstream intersection in different forms. Through the analysis of the delay of vehicles, when the green split is less than 0.64, the tail truncation delay is greater than the front truncation delay. When the green split is greater than or equal to 0.64, the opposite is true. The phase difference of upstream and downstream intersections can be optimized and coordinated according to the goal that vehicles can smoothly pass through the coordinated control intersection or ensure the minimum delay, so as to give full play to the space-time utilization of the coordinated control intersection.

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“…However, under influences of pedestrian and truck, the model's performance is limited. Wael et al [9] investigates the rationality and effectiveness of designing signal coordination for pedestrians considering relationship between pedestrian platoon dispersion and the signal cycle length. Their results showed that the coordination for the major pedestrian flow led to a significant reduction in average delay (15%).…”

Section: Literature Reviewmentioning

confidence: 99%

A proposal of methodology to analyze platoon dispersion at signalized crosswalk considering pedestrian demand and crosswalk length

Tien

2020

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Understanding pedestrian platoon dispersion at signalized crosswalk is essential not only for improving pedestrian safety but also for estimating pedestrian crossing time requirement. This paper proposed platoon dispersion ratio (PDR) as an index to analyse the effects pedestrian demand and crosswalk length upon pedestrian platoon dispersion at signalized crosswalk. The result shows that the heavier pedestrian demand usually corresponds to greater platoon dispersion. Regarding the influence of crosswalk length, it is revealed that the dispersion tends to increase as the crosswalk length increases

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Performance evaluation of the HCM 2010 platoon dispersion model under midblock pedestrian and truck traffic friction conditions

Cited by 4 publications

References 10 publications

Influence of urban road characteristics on traffic noise

Influence of urban road characteristics on traffic noise

Research on Platoon Dispersion Delay of Traffic Flow considering Coordinated Control

A proposal of methodology to analyze platoon dispersion at signalized crosswalk considering pedestrian demand and crosswalk length

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