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

Fornalchyk, Yevhen; Hrytsun, Oleh; Kernytskyy, Ivan; Royko, Yuriy

doi:10.22630/pniks.2021.30.1.4

Cited by 11 publications

(17 citation statements)

References 3 publications

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“…They are a phenomenon of the immobility of TFs, which is formed on the basis of its maximum compaction. It occurs due to an increase in traffic intensity, which exceeds the capacity of a section of a street or road [1].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishing patterns of change in the efficiency of regulated intersection operation considering the permitted movement directions

Boikiv

Postranskyy

Afonin

2022

EEJET

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The object of this study is a regulated intersection of city streets. The main task being solved is the reduction of queue lengths on approaches to such intersections by organizational measures. As a result of the research, patterns of change in queue lengths in front of the stop line were revealed, taking into consideration the specialization of traffic lanes and the distribution of traffic flows by directions. It was established that with an increase in the share of left-turning vehicles in the lane by 15 % and above, there is an increase in the length of the queue before the intersection from 45 to 80 m. The results indicate that when choosing a traffic pattern at the intersection, it is necessary to take into consideration not only the intensity of the flow itself but also the proportion of vehicles performing certain maneuvers (in this work, turning left is considered). A feature of the results is that they are obtained using simulation tools. This research method has made it possible to derive the value of the length of the queue in front of the intersection, changing the load on the approach from 200 to 1000 vehicle/h and the share of left-turning vehicles from 5 to 15 %. In addition, using a simulation model, it was checked how the intersection functions under various traffic management schemes on it when the input parameters of traffic flows change. The research results are recommended to be used in the development of traffic management schemes at regulated intersections. When determining the permitted directions of movement in the lanes, it is necessary to take into consideration the patterns of change in the length of queues before the intersection since under certain circumstances they may exceed critical values.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishing patterns of change in the efficiency of regulated intersection operation considering the permitted movement directions

Boikiv

Postranskyy

Afonin

2022

EEJET

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“…At the same time, with a fixed-time multi-program switching of the traffic light, it can be carried out according to the period of the day and days of the week, summer and winter periods, different weather conditions (rain, snow, ice), etc. [2,7].…”

Section: Traffic Light Control and Traffic Flow Delaysmentioning

confidence: 99%

“…This will make it possible to reduce the number of traffic jams on the streets and roads, the time lost by the people for movement, increase the level of safety, and improve the environmental situation, etc. [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, a common phenomenon in domestic practice is the creation of a constantly fixed duration for each signaling phase, which is calculated based on researched statistical data on traffic flow parameters. However, frequent changes in traffic intensities and the composition of traffic flows lead to a decrease in the effectiveness of this regulation method [2][3][4]. However, on the sections of the street network where traffic management at the intersection is organized only by road signs, significant delays in secondary traffic directions often occur.…”

Section: Introductionmentioning

confidence: 99%

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The influence of the traffic light`s permissive signal share on the duration of traffic delays

Postranskyy¹,

Khoreva²

2022

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Today, the motorization level and the value of traffic flow on the street-road network have increased. Often this leads to an excessive load on the existing traffic management system, highways, and roads. As a result, the number and duration of traffic delays are increasing, especially within populated areas. The consequence of this is the formation of traffic jams, increase of fuel and lubricants consumption, noise pollution, and emissions of exhaust gases. Another, no less critical consequence is an increase in traffic accidents, particularly at unsignalized intersections. Therefore, a traffic light control system is often implemented at street intersections to increase traffic safety and reduce the number of conflicting flows. In addition, this system should be optimized for signalized objects. The object of the study is a signalized intersection of multi-lane streets located in the city. The main problem that needs to be solved is the reduction of the vehicles` delay duration at the approaches to such intersections, in particular with the use of appropriate organizational measures and planning of the traffic light control system. According to the study's results, regularities were revealed regarding the change in the traffic's delay duration depending on the share of the permissive signal and the duration of the traffic light's cycle at the street intersection. At the same time, the received modulation results in the PTV Vissim software environment indicate an increase in delay values with an increase in the duration of the traffic light cycle. However, an equally important influence factor is the share of the permissive signal, as it reduces to a certain extent the duration of vehicles in standby mode at the approaches to the signalized intersection. The obtained results are recommended to be used in both developing new traffic organization schemes at signalized street intersections and improving existing ones.

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“…In papers [1][2][3], it is determined that for different city territories (transport districts), such time parameters are significantly different, based on the time of patient waiting for pedestrians. Consideration of the time of patient waiting allows reducing the number of violations of traffic light control regime by pedestrians.…”

Section: Analysis Of Recent Research and Publicationsmentioning

confidence: 99%

Minimization of public transport delays at arterial streets with coordinated motion

Royko¹,

Yevchuk²,

Bura³

et al. 2022

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Research results, using which the method of minimization of public transport delay is improved at intersections with the system of coordinated motion control, are given in this paper. Such transport research was carried out with simultaneous application of field measurements of the study of traffic flow indicators and computer simulation in PTV VISSIM to check the level of efficiency of coordinated control and the reliability of the results. The essence of the method is that it reduces the delay in traffic per user of the transport system during his movement through a signalized section of the road network. The effectiveness of this method is achieved under condition of significant intensity of public transport, which is provided with spatial priority in the form of the allocated lane. Invariability of the number of lanes in the area where coordination takes place, and a high level of transit (above 70%) of straight traffic flows are compulsory indicators and parameters. The result is achieved with such phases in the direction of coordinated control, the share of the permissive signal in which is more than 45% of the cycle duration with a duration limit of 90-125 s. With such parameters, the starting delays of the general traffic flow at the stop-lines are minimized, and the maximum values of the saturation flow are achieved. In addition, a sufficient width of the time lane is established for the passage of signalized areas by public transport. There is still some delay in public transport in such a control system, but it is connected with delays at bus stops. The introduction of such systems of coordinated traffic control is recommended on the arterial streets of citywide importance of controlled motion with a distance between adjacent stop-lines of not more than 800 m. This restriction allows avoiding the dissipation of groups of vehicles.

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

Cited by 11 publications

References 3 publications

Establishing patterns of change in the efficiency of regulated intersection operation considering the permitted movement directions

Establishing patterns of change in the efficiency of regulated intersection operation considering the permitted movement directions

The influence of the traffic light`s permissive signal share on the duration of traffic delays

Minimization of public transport delays at arterial streets with coordinated motion

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