O uso da microssimulação para avaliação de alternativas de controle de tráfego em uma interseção urbana: estudo de caso em Goiânia/GO

Abstract

The disorderlygrowth of Brazilian cities, coupled with the continuousincrease invehiclefleets, intensifiesurbanmobilityproblemssuch as congestion, long travel times,and highatmosphericpollutantemissions. Urbanintersectionsstand out as criticalpoints in the road network, concentratingtrafficconflicts and exhibitingoperationallimitationsduringpeakperiods. This research evaluates different traffic controlalternatives for the intersectionbetween Avenida Transbrasiliana and Avenida Feira deSantana, in Goiânia/GO, using microsimulation with Vissim software. Threescenariosweresimulated: (1) existingroundabout (base scenario); (2) fixed-timetrafficsignal; (3) intelligenttrafficsignal. The performance indicatorsassessedincludeaveragewaitingtime, level of service, queuelength, and pollutantemissions (CO, NOx, VOCs) and fuelconsumption. The resultsindicated that Scenario 3 (actuatedsignal) presented the bestoverall performance. However, structuralbottlenecks in certainapproachespersistedeven with actuated control, suggesting the need for complementarygeometricintervention or public transportprioritization. It is concluded that the implementation ofan intelligenttrafficsignal is more efficient for improvingurbanmobility and reducingenvironmentalimpacts, although the importance of integratedvehicledemand management policies is acknowledged