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Calibration of microscopic traffic simulation of urban road network including mini-roundabouts and unsignalized intersection using open-source simulation tool

Yavuz Mehmet Nedim, Özen Halit

Zeszyty Naukowe. Transport / Politechnika Śląska

2024

z. 122

305--318

Microscopic traffic simulation models offer an effective way to analyze and assess different transportation systems thanks to their efficiency and reliability. As traffic management issues become more prevalent, notably in urban areas, simulation tools enable a significant opportunity to replicate real-world conditions before implementation. Therefore, the calibration of traffic simulation models plays a substantial role in obtaining accurate and confidential results. Nowadays, urban regions are facing the challenge of restricted space for developing traffic solutions. As a consequence of environmental restrictions, the use of mini-roundabouts rather than larger roundabouts is increasing. Based on the given literature review, it is seen that not much attention was given to the complex modeling and calibration of microsimulation models of mini-roundabouts and unsignalized intersections. The objective of this study is to offer the calibration of microscopic traffic simulation of urban road network, including closely located mini-roundabouts and unsignalized intersection. To this end, an open-source tool called SUMO (Simulation of Urban Mobility) was utilized as a simulation environment in this study. The necessary data for developing a microsimulation model in SUMO was gathered using a videography technique. The traffic count data and speed were considered performance measures between field observations and simulation outputs. The routeSampler tool of SUMO, which has recently emerged in the literature, was used to match traffic count data and the corresponding time interval for traffic volume data calibration. The calibration of car-following model parameters using a trial-and-error approach was employed based on mean absolute percent error (MAPE) between simulated speeds and field-measured speeds. According to the findings of the study, the simulation model fulfilled the calibration aims of the FHWA guideline and is suitable for further research.

Rozwój sztuki projektowania jako alternatywa metody prób i błedów

Pfitzner A.

Elektronika : konstrukcje, technologie, zastosowania

2000

Vol. 41, nr 10

6-11

Przedmiotem artykułu jest ewolucja techniki projektowania technicznego. Autor porównuje dwie metody: metodę prób i będów oparta na intuicji i doświadczeniu oraz planowaną działalność trwórczą podbudowaną osiągnięciami naukowymi. Pierwsza jest zilustrowana przykładami z historii architektury i alchemii, zaś druga komputerowym wspomaganiem projektowania układów scalonych bardzo wielkiej skali integracji.

Fundamental quality change in the history of technology is the subject of the paper. It shows a transformation from the technical activity based only on the intuition and experience successively gathered to many generations, to the planned creative based on the scientific methods and achievements. In other words, a substitution of the method of trials and mistakes by the conscious technical design is discussed. This two methods are compared and briefly chracterised. The first is ilustrated using examples in the dield of architekture and alchemy. The systematic design is shown as an result of the closer relationships between science and technology. The computer aided design is also presented in the context of the design methodology development nad is ilustrated by the design of the integrated circuits. Artistic and chemistic aspects of the design are also mentioned.