Methedological proposal for identification data collection points on cargo flows: a contribution to matrix freight flow models
The aim of this paper is to propose a method to support the identification of data collection points on cargo flows, as a subsidy for the application of the synthetic origin-destination (O/D) modeling matrix. This method is based on the use of spatial analysis techniques to: locate and georeference Traffic Generator Poles (TGPs) in the highly critical area of urban cargo transportation; identify and calculate the density of areas of greater dispersion and TGP concentration; identify route intersections that give access to areas with the highest TGP concentration and to critical areas for the urban cargo transportation. The authors identified twenty-three potential cargo flow data collection points in Teresina, Piauí, Brazil. This method brings an innovative approach allowing for better delineation of data collection points and an increase in the quality and speed of data collection in the field research related to urban freight flows.