Traffic parameters estimation from the analysis of connected car data
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hdl:2117/82011
Tipus de documentProjecte Final de Màster Oficial
Data2015-09
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Abstract
Traffic flow theory is grounded on the theoretical analysis of time-space vehicle trajec-
tories to describe the movement of individual vehicles and the relative movement of the neighbour
vehicles. Nevertheless, this theoretical point of view has rarely been considered in the empirical
analysis of traffic data, since the available information was typically the aggregated spot
measurements of flows, speeds and occupancies provided by inductive loop detectors. This limitation
begins to be overcome with the advances in ICT applications. In particular, the vehicles known as
probe vehicles are able to acquire wide-ranging and spa- tiotemporally detailed information about
their positions via GPS, but they can not directly supply volume-related variables such as flow and
density. Cooperative cars with commu- nication capabilities with other vehicles and/or the
infrastructure represent a step forward because they also allow to track the vehicles in their
surrounding. In this project we de- scribe and analyze the experiment conducted in Barcelona with a
small fleet of cooperative vehicles equipped with a set of radars that identify the vehicles within
their detection zone. The gathered data were used to build and calibrate the emulation of the
functions of such vehicles in a microscopic simulation model, which allowed to emulate fleet data
on a large scale that goes far beyond what the reduced fleet of vehicles could capture. Finally,
this data leads us to explore and evaluate methodological approaches for the estimation of the
fundamental traffic variables, namely the flow, density and average speed, based on Edie’s
definitions.
MatèriesTraffic flow -- Measurement, Traffic estimation, Automatic data collection systems, Vehicle detectors, Global Positioning System, Circulació -- Intensitat -- Mesurament, Circulació -- Estimació, Sistemes d'adquisició de dades, Anàlisi de dades, Vehicles -- Detectors, Sistema de posicionament global
TitulacióMÀSTER UNIVERSITARI EN LOGÍSTICA, TRANSPORT I MOBILITAT (Pla 2009)
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
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TFM_Meritxell.pdf | Report | 4,309Mb | Accés restringit |