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Modelling driver behaviour in traffic-calmed areas

Richter M., Paszkowski J.

Technical Transactions

2018

Vol. 115, iss. 8

111--124

The aim of this paper is to investigate driver behaviour in order to develop a method for improving microand macrosimulation traffic models with a particular focus on traffic calming solutions. Therefore, speed profiles were calculated, a PTV Vissim model was created, and an attempt to estimate volume-delay functions was made. Driver behaviour was modelled on the basis of video recordings of traffic in trafficcalmed links. Speed profiles were divided into parts where the speed is influenced with the traffic calming and not, and speed distributions were calculated in order to be used in Vissim. Vissim microsimulation was tested on various traffic volumes, with various traffic compositions, in order to identify the relationship between traffic flow and travel time.

Celem niniejszego artykułu jest zbadanie zachowań kierowców na ulicach o ruchu uspokojonym, w celu stworzenia metody modelowania mikro- i makrosymulacyjnego ulic tego typu. Za pomocą nagrań wideo ruchu odtworzono trajektorie pojazdów w celu ustalenia wyglądu funkcji oporu odcinka. Prędkości zostały podzielone na te występujące w miejscach, gdzie ruch jest spowolniony z powodu urządzeń uspokojenia ruchu, oraz te, w których ruch odbywa się bez zakłóceń, w celu stworzenia modelu w programie PTV Vissim. Model ten został przetestowany dla różnych natężeń ruchu, tak aby odkryć relację między natężeniem ruchu a zwiększeniem czasu przejazdu.

Analysis of possibilities for the use of volume-delay functions in the planning module of the Tristar system

Oskarbski J., Jamroz K., Smolarek L., Zawisza M., Żarski K.

Transport Problems

2017

T. 12, z. 1

39--50

Travel time is a measure commonly used for traffic flow modelling and traffic control. It also helps to evaluate the quality of traffic control systems in urban areas. Traffic control systems that use traffic models to predict changes and disruptions in vehicle flows have to use vehicle speed-prediction models. Travel time estimation studies the effects of traffic volumes on a street section at an average speed. The TRISTAR Integrated Transport Management System, currently being deployed across the Tri-City (Gdansk, Sopot, Gdynia), is almost completed and data obtained from the System can be useful for the development of prediction models. A procedure for travel speed model selection for the Tri-City street network is presented in this paper. Matching of chosen volume-delay functions to the data obtained from the TRISTAR has been tested. Analyses have shown insufficient matching of functions that does not justify the possibility of their use in traffic control due to variability in different conditions of traffic, weather and, in the case of an incident, which justifies the need for further research aimed at satisfying matching of functions depending on the above-mentioned factors.