Flötteröd, Gunnar

Infoscience - École polytechnique fédérale de Lausanne

Transportation research at the TRANSP-ORlaboratoryPresentation of selected projectsGunnar FlötterödJune 24, 2009The TRANSP-OR laboratory•Directed by Michel Bierlaire, the Transport and MobilityLaboratory is active in modeling, optimization and simulationof transportation systems, with a specic emphasis on themobility of individuals.•19 members, including 8 PhD students 3 postdocs•here: presentation of 4 selected projectsOutlineModeling of pedestrian walking behaviorSOPHOS  trac signal optimizationDisaggregate behavioral models exploiting data from Nokia devicesCalibration of trac microsimulatorsOutlineModeling of pedestrian walking behaviorSOPHOS  trac signal optimizationDisaggregate behavioral models exploiting data from Nokia devicesCalibration of trac microsimulatorsModeling of pedestrian walking behavior•modeling operational pedestrian behavior•novel application of discrete choice models•interplay with computer vision use model for pedestrian tracking use tracked pedestrians for calibration•ongoing series of projects•Michel Bierlaire, Thomas Robin, Javier Cruz, et al.•collaboration with Signal Processing Laboratory 5Calibration and validationA selected validation resultOutlineModeling of pedestrian walking behaviorSOPHOS  trac signal optimizationDisaggregate behavioral models exploiting data from Nokia devicesCalibration of trac microsimulatorsSOPHOS  trac signal optimization•optimization of inner-urban signal timing•deploys novel analytical queueing model•links microsimulator to the optimization•December 01, 2007  November 30, 2009•Michel Bierlaire, Carolina Osorio•sponsor: Swiss National Science FoundationInterplay of analytical optimization and microsimming,µ,xT (g , µ, x, α) (1)subject to:∑p∈PI (i)gp= bi, ∀i ∈ I (2)µ` −∑p∈PL(`)gps = 0, ∀` ∈ L (3)h(µ, x, α) = 0 (4)g ≥ gL(5)µ ≥ 0 (6)x ≥ 0. (7)•microsimulator (SIMLO) for parametrization, evaluation•analytical model for optimizationA selected optimization resultOutlineModeling of pedestrian walking behaviorSOPHOS  trac signal optimizationDisaggregate behavioral models exploiting data from Nokia devicesCalibration of trac microsimulatorsDisaggregate behavioral models exploiting data fromNokia devices•gather mobility & activity information fromsmart phones 50 survey participants receive free phones phones send ambient information to server supplemented by web-based survey•use data for advanced mobility & activitymodeling•December 01, 2008  June 30, 2010•Michel Bierlaire, Je Newman, Jingmin Chen•sponsor: Nokia Research CenterGPS-tracks•GPS tracks consist of locations with time stamps•no immediate information about activities, travel modes, ...Workow of supplementary survey•test persons report daily to web-based survey system•all data is stored in database for further investigationsOutlineModeling of pedestrian walking behaviorSOPHOS  trac signal optimizationDisaggregate behavioral models exploiting data from Nokia devicesCalibration of trac microsimulatorsCalibration of trac microsimulators•basically, disaggregate OD matrix estimation•calibration of arbitrary behavioral patterns•details in next presentation•ongoing sequence of projects•Michel Bierlaire, Gunnar Flötteröd, et al.•sponsor: German Research Foundation, ECSummary•mathematical models and techniques apply to manytransportation problems•TRANSP-OR is active in modeling, optimization andsimulation of transportation systems•for more information:http://transp-or.epfl.ch/

Transportation research at the TRANSP-OR laboratory

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Transportation research at the TRANSP-OR laboratory

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Infoscience - École polytechnique fédérale de Lausanne