Repository logo
 
Publication

Calibration of the Gipps Car-following Model Using Trajectory Data

dc.contributor.authorVasconcelos, Luís
dc.contributor.authorNeto, Luís
dc.contributor.authorSantos, Sílvia
dc.contributor.authorBastos Silva, Ana
dc.contributor.authorSeco, Álvaro
dc.date.accessioned2015-03-02T18:29:25Z
dc.date.available2015-03-02T18:29:25Z
dc.date.issued2014-11-08
dc.description.abstractOne of the most important tasks in the microscopic simulation of traffic flow, assigned to the car following sub-model, is the modelling of the longitudinal movement of vehicles. The calibration of a car-following model is usually done at an aggregated level, using macroscopic traffic stream variables (speed, flow, density). There is an interest in calibration procedures based on disaggregated data. However, obtaining accurate trajectory data is a real challenge. This paper presents a low-cost procedure to calibrate the Gipps car-following model. The trajectory data is collected with a car equipped with a datalogger and a LIDAR rangefinder. The datalogger combines GPS and accelerometers data to provide accurate speed and acceleration measurements. The LIDAR measures the distances to the leading or following vehicle. Two alternative estimation methods were tested: the first follows individual procedures that explicitly account for the physical meaning of each parameter; the second formulates the calibration as an optimization problem: the objective function is defined so as to minimize the differences between the simulated and real inter-vehicle distances; the problem is solved using an automated procedure based on a genetic algorithm. The results show that the optimization approach leads to a very accurate representation of the specific modeled situation but offers poor transferability; on the other hand, the individual estimation provides a satisfactory fit in a wide range of traffic conditions and hence is the recommended method for forecasting purposes.por
dc.identifier.doi10.1016/j.trpro.2014.10.075
dc.identifier.urihttp://hdl.handle.net/10400.19/2645
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S2352146514002385por
dc.subjectCar Followingpor
dc.subjectGippspor
dc.subjectGippspor
dc.subjectAccelerationpor
dc.subjectReaction Timepor
dc.subjectGenetic Algorithmpor
dc.titleCalibration of the Gipps Car-following Model Using Trajectory Datapor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage961por
oaire.citation.startPage952por
oaire.citation.titleTransportation Research Procediapor
oaire.citation.volume3por
rcaap.rightsopenAccesspor
rcaap.typearticlepor

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
1-s2.0-S2352146514002385-main.pdf
Size:
526.02 KB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.79 KB
Format:
Item-specific license agreed upon to submission
Description: