Author(s)

Viviani Antunes Gomes¹, Cira Souza Pitombo¹, Samille Santos Rocha¹, Ana Rita Salgueiro²

¹Department of Transportation Engineering, University of São Paulo, São Carlos, Brazil.
²Department of Geology, Federal University of Ceará, Fortaleza, Brazil.

This paper aims to compare the results of two techniques of Kriging (Ordinary Kriging and Indicator Kriging) that are applied to estimate the Private Motorized (PM) travel mode use (car or motorcycle) in several geographical coordinates of non-sampled values of the concerning variable. The data used was from the Origin/Destination and Public Transportation Opinion Survey, carried out in 2007/2008 at S?o Carlos (SP, Brazil). The techniques were applied in the region with 110 sample points (households). Initially, Decision Tree was applied to estimate the probability of mode choice in surveyed households, thus determining the numeric variable to be used in Ordinary Kriging. For application of Indicator Kriging it was used the variable “main travel mode” in a discrete manner, where “1” represented the use of PM travel mode and “0” characterized others travel modes. The results obtained by the two spatial estimation techniques were similar (Kriging maps and cross-validation procedure). However, the Indicator Kriging (KI) obtained the highest number of hit rates. In addition, with the KI it was possible to use the variable in its original form, avoiding error propagation. Finally, it was concluded that spatial statistics was thriving in travel demand forecasting issues, giving rise, for the both Kriging methods, to a travel mode choice surface on a confirmatory way.

Geostatistics, Kriging, Travel Mode Choice, Spatial Estimation

Gomes, V. , Pitombo, C. , Rocha, S. and Salgueiro, A. (2016) Kriging Geostatistical Methods for Travel Mode Choice: A Spatial Data Analysis to Travel Demand Forecasting. Open Journal of Statistics, 6, 514-527. doi: 10.4236/ojs.2016.63044.