Research on Tram Detector Location Based on Vehicle–Infrastructure Communication

Yan, Huang; Ou, Dongxiu; Chen, Ziyan; Yang, Yang

doi:10.1007/978-981-10-7986-3_92

Cited by 3 publications

(5 citation statements)

References 6 publications

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“…For the proper functioning of priority traffic control algorithms, it is necessary to use an appropriate detector system. This was confirmed by the considerations of the authors of [15]. The authors pointed out several types of tram detectors, from the point of view of their use in traffic control algorithms: an announcement detector, responsible for registered requests to the traffic control system at a distance; a green signal request detector; an intersection entry detector; and an exit detector.…”

Section: Literature Reviewmentioning

confidence: 71%

“…Because of the inclusion in the analysis of the accommodative control, with an extremely random character, these parameters were determined by simulation, and not by an analytical method. In this paper, the calculation of the emission of pollutants by individual transport was based on measures of effectiveness (MOEs) used in other papers: delay [6,11,15,27,37,[50][51][52], travel speed [11,16], and traveled distance and stops. Additionally, the following MOEs were used to assess the quality of control: tram delay [6,11,27,50], tram stops [16,27], tram operating speed [10,16,28], and travel speed [11,16].…”

Section: Discussionmentioning

confidence: 99%

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Traffic Light Priority for Trams in Warsaw as a Tool for Transport Policy and Reduction of Energy Consumption

et al. 2021

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The article presents an analysis of priority solutions for trams at a selected sequence of intersections in Warsaw (Poland). An analysis of the literature has shown the topicality of this issue. A computer simulation model of a coordinated sequence of intersections was constructed. Three test scenarios were designed: the existing control system, the new coordinated fixed-time control system, and the adaptive control system with active priority. In the simulation process, detailed travel characteristics of trams and other traffic participants in a selected section were obtained for the three varying scenarios. Electric energy consumption for traction needs and pollutant emissions was then estimated for each of the variants. It was concluded that for the analyzed configuration, implementation of the adaptive priority will result in a reduction of tram time losses by up to 25%, a reduction in energy consumption by up to 23%, and a reduction in the emission of pollutants from individual vehicles by up to 3% in relation to the original variant. The conducted research may be the basis for a comprehensive method of assessing the effectiveness of applying the adaptative priority when designing new tramway lines and modernizing the existing ones.

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Section: Literature Reviewmentioning

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Traffic Light Priority for Trams in Warsaw as a Tool for Transport Policy and Reduction of Energy Consumption

et al. 2021

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“…The present literature on streetcar development in China mainly focuses on the aspects of engineering technology, signal optimization, intersection control strategies, and operating parameter design [52][53][54][55][56]. Yet researches on the integrated motives and substantial dynamics that push streetcar projects forward are relatively limited.…”

Section: Literature Reviewmentioning

confidence: 99%

Streetcar Development in China: The Motivations Behind

Chen

2022

Sustainability

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In recent years, there has been a remarkable rebirth of the streetcar in China, with dozens of projects under consideration, in planning and construction, or already completed in cities throughout the country. The development of such a relatively mega-project often raises the question of “why Chinese cities develop their streetcar projects”. Building on insights into streetcar projects materials and in-depth interviews with elite figures, and together with relevant socioeconomic data comparisons, the paper sets out to reveal how the resurgence of the streetcar was facilitated and motivated, and why such urban mega-projects are so attractive to cities, and to further derive lessons to better inform policymakers, planners, and researchers in proposing, planning and implementing streetcars in China. Our findings revealed five major themes to motivate streetcars development in China, which unpacked the answer to the question into five aspects: rapid urbanization, supportive policy environment, less-restrictive approval mechanisms, goal-seeking for streetcar development, and potential inter-city competition. A discussion of these themes in the Chinese context leads us to the conclusion that the process of proposing, promoting, and approving streetcar projects is not only dependent on its expected achievements bring to the region but very much on the economic–political reasons and inter-city competition.

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“…In other works, it is suggested that deteriorating individual traffic conditions is a natural consequence of prioritization [20], or that it serves as the basis for lowering the level of priority [25]. These discrepancies in research results arise from the fact that most analyzed studies considered only simplified two-phase algorithms [26][27][28], or isolated intersections [29,30] or prioritization was controlled by a simplified algorithm that only extended the green light for the main direction [19], with no examination of the impact on other road users [31].…”

Section: Introductionmentioning

confidence: 99%

“…The authors of publications [23,28,35] view traffic signal control as a highly simplified phenomenon, making applying research results to solve the priority problem impractical. Few publications refer to more than two-phase solutions [13,30].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Priority in Coordinated Traffic Lights on Tram Energy Consumption

Górka,

Czerepicki,

Krukowicz

2024

Energies

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Traffic signal priority issues have been a research subject for several decades in Poland and worldwide. Traffic control algorithms have evolved considerably during this period and have become increasingly advanced. Most of them operate within coordinated street sequences, which adds to their complexity. Tramway priority affects traffic conditions for other road users, so many aspects must be taken into account when choosing a priority solution. Typically, one of the main criteria for evaluating the effectiveness of priority is reducing travel time for the priority vehicle while ensuring that the travel times of other traffic participants through the intersection are maintained or slightly deteriorated. However, the energy aspects are often overlooked. This publication aims to investigate how local priority for tramways in traffic signals of coordinated streets affects energy consumption for tramway traction needs. The study was conducted using a microscopic modeling method with PTV Vissim software (ver. 2021). The models were built for coordinated sequences with different levels of priority. Real traffic control algorithms with priority were implemented into the model on the sequence of Marymoncka Street and Grochowska Street in Warsaw. Then, by introducing changes to the parameters of the algorithms, their effect on traffic characteristics, including estimated power consumption, was studied. The results obtained from the computer simulation were statistically processed using R software (ver. 4.3.2). The analysis results prove the effectiveness of tramway priority operation, show its impact on electricity consumption, and allow us to determine the limits of its effective application. Thus, they complement the knowledge of the impact of tramway priority on traffic. The research results also have practical value, as they help us to make rational decisions in the process of designing traffic control algorithms at intersections with a multi-criteria approach.

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Research on Tram Detector Location Based on Vehicle–Infrastructure Communication

Cited by 3 publications

References 6 publications

Traffic Light Priority for Trams in Warsaw as a Tool for Transport Policy and Reduction of Energy Consumption

Traffic Light Priority for Trams in Warsaw as a Tool for Transport Policy and Reduction of Energy Consumption

Streetcar Development in China: The Motivations Behind

The Impact of Priority in Coordinated Traffic Lights on Tram Energy Consumption

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