Wyniki wyszukiwania - BazTech

1

Optimising pedestrian flow in a topological network using various pairwise speed-density models

Khalid Ruzelan, Nawawi Mohd Kamal Mohd, Ishak Nurhanis, Baten Md Azizul

Operations Research and Decisions

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2023

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Vol. 33, No. 4

53--69

EN

A speed-density model can be utilised to efficiently flow pedestrians in a network. However, how each model measures and optimises the performance of the network is rarely reported. Thus, this paper analyses and optimises the flow in a topological network using various speed-density models. Each model was first used to obtain the optimal arrival rates to all individual networks. The optimal value of each network was then set as a flow constraint in a network flow model. The network flow model was solved to find the optimal arrival rates to the source networks. The optimal values were then used to measure their effects on the performance of each available network. The performance results of the model were then compared with that of other speed-density models. The analysis of the results can help decision-makers understand how arrival rates propagate through traffic and determine the level of the network throughputs.

2

Choice of the rational regimes of traffic light control for traffic and pedestrian flows

Fornalchyk Yevhen, Kernytskyy Ivan, Hrytsun Oleh, Royko Yuriy

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2021

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Vol. 30, No. 1

38--50

EN

The method for the choice of rational regimes of traffic light control is developed based on the minimization of the number of violations the requirements of traffic light signals by pedestrians depending on the volume-capacity ratio of traffic lanes and control of vehicular queue on the approach to the stop-line. Assessment of rationality is carried out considering the simultaneous impact of such factors as roadway volume-capacity ratio, traffic light restrictive signal duration, the number of violations of the traffic rules by pedestrians, and maximal queue length of vehicles. The model of the change of the number of violations of the rules of crossing the roadway by pedestrians depending on the volume-capacity ratio of different intersection types is developed in this paper. The model of determining the maximal vehicular queue length before intersections depending on the volume-capacity ratio and the share of the restrictive signal on the lane in the control cycle is developed. Recommendations about the choice of rational regimes of traffic light control depending on traffic delay, planning parameters of the road network, and pedestrian behavior are proposed.

3

Determining NO2 immission levels in a conflicted area: Riobamba, Ecuador

Paredes Marcel, Viteri Rafaela, Auqui Dayana, Idrovo David

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2019

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Vol. 28, No. 3

465--475

EN

Riobamba has areas with high vehicular influence. For the determination of nitrogen dioxide concentrations, passive samplers were used, which were placed at points throughout the domain. The concentrations obtained in the field were interpolated with the information generated with the model traffic emissions software, estimating the relationship between vehicular traffic and the presence of gas. Allow to know the amount of pollutants that breathe about 250 pedestrians on average in the area.

4

Kategorie ruchu pieszych na kładkach i prawdopodobieństwa ich występowania

Pańtak M.

Zeszyty Naukowe. Budownictwo / Politechnika Śląska

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2005

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z. 104

243-250

PL

Praca niniejsza stanowi wprowadzenie w zagadnienia warunków użytkowalności dynamicznej kładek dla pieszych. Poruszono w niej zagadnienia ruchu pieszych w środowisku miejskim, przedstawiono propozycje kategorii ruchu pieszych na kładkach oraz określono prawdopodobieństwa ich występowania.

EN

The paper introduces to a problem of dynamic serviceability requirements of footbridges. The pedestrian flow categories in cities are characterized and classification of pedestrian traffic on footbridges is proposed. Finally, probabilities of representative traffic category occurrence are specified.