Search results for " Passenger car"

showing 4 items of 4 documents

Calibration of microscopic traffic simulation models for evaluating operation and safety performance at roundabouts

AIMSUN microsimulation roundabout genetic algorithmSSAM surrogate safety measureturbo-roundaboutsingle-lane roundabouts; double-lane roundabouts; turbo-roundabouts; entry capacity; operations; gap- acceptance parameters; Systematic Review; Meta-analysis; capacity uncertainty; AIMSUN microsimulation roundabout genetic algorithm; passenger car equivalent; SSAM surrogate safety measurecapacity uncertaintygap- acceptance parameteroperationsingle-lane roundaboutpassenger car equivalentSettore ICAR/04 - Strade Ferrovie Ed AeroportiMeta-analysiSystematic Reviewdouble-lane roundaboutentry capacity
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A Life Cycle Environmental Impact Comparison between Traditional, Hybrid, and Electric Vehicles in the European Context

2021

Global warming (GW) and urban pollution focused a great interest on hybrid electric vehicles (HEVs) and battery electric vehicles (BEVs) as cleaner alternatives to traditional internal combustion engine vehicles (ICEVs). The environmental impact related to the use of both ICEV and HEV mainly depends on the fossil fuel used by the thermal engines, while, in the case of the BEV, depends on the energy sources employed to produce electricity. Moreover, the production phase of each vehicle may also have a relevant environmental impact, due to the manufacturing processes and the materials employed. Starting from these considerations, the authors carried out a fair comparison of the environmental …

Geography Planning and DevelopmentTJ807-830Context (language use)life cycle analysisManagement Monitoring Policy and Lawpassenger carTD194-195environmental impactAutomotive engineeringRenewable energy sourcesbattery electric vehicleBattery electric vehicleBattery electric vehicle Environmental impact Hybrid electric vehicle Life cycle analysis Passenger carEnvironmental impact assessmentGE1-350hybrid electric vehicleEnvironmental effects of industries and plantsRenewable Energy Sustainability and the Environmentbusiness.industryFossil fuelEnvironmental sciencesSettore ING-IND/08 - Macchine A FluidoInternal combustion engineCarbon footprintEnvironmental scienceElectricitybusinessEnergy sourceSustainability
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Calibrating a microscopic traffic simulation model for roundabouts using genetic algorithms

2018

The paper introduces a methodological approach based on genetic algorithms to calibrate microscopic traffic simulation models. The specific objective is to test an automated procedure utilizing genetic algorithms for assigning the most appropriate values to driver and vehicle parameters in AIMSUN. The genetic algorithm tool in MATLAB® and AIMSUN micro-simulation software were used. A subroutine in Python implemented the automatic interaction of AIMSUN with MATLAB®. Focus was made on two roundabouts selected as case studies. Empirical capacity functions based on summary random-effects estimates of critical headway and follow up headway derived from meta-analysis were used as reference for ca…

Statistics and Probability050210 logistics & transportationGenetic algorithm traffic microsimulation AIMSUN passenger car equivalent roundaboutComputer science05 social sciencesReal-time computingGeneral EngineeringTraffic simulation02 engineering and technologySettore ING-INF/04 - AutomaticaArtificial Intelligence0502 economics and business0202 electrical engineering electronic engineering information engineeringSettore ICAR/04 - Strade Ferrovie Ed Aeroporti020201 artificial intelligence & image processingJournal of Intelligent & Fuzzy Systems
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Application of a genetic algorithm in calibration of traffic microsimulation models

2017

This chapter describes the genetic algorithm-based calibration procedure for a microscopic traffic simulation model focusing on freeways and modern roundabouts. For both case studies, the genetic algorithm tool in MATLAB® was applied in order to reach the convergence between the outputs from Aimsun microscopic simulator and the observed data. The automatic interaction with Aimsun software was implemented through an original external Python script. Results showed that the genetic algorithm-based calibration procedure gave a better match to the observed data than simple manual calibration and the efficiency of the calibration efforts resulted significantly improved. At last, the calbrated mod…

calibration Aimsun genetic algorithm freeways single-lane roundabouts passenger car equivalentSettore ING-INF/04 - AutomaticaSettore ICAR/04 - Strade Ferrovie Ed Aeroporti
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