Implications of activity classification aggregation in urban freight trip generation linear models
Book chapter, 2019

This chapter studies the implication of aggregating establishments by categories with different levels of detail for modeling FTG. To this effect, the chapter conducts an assessment of freight trip generation (FTG) patterns homogeneity inside activity-based grouping. The method implemented is econometric in nature, which allows the assessment of the statistical significance of variables representing commercial activity sectors and sub-sectors. The results show that for some sectors the traditional high-level aggregation includes sub-sectors with homogenous FTG patterns and thus produces appropriate models; in some other cases (e.g., retail, manufacturing), the sub-sectors have different FTG patterns and thus more detailed data is needed to calibrate accurate models. This research can be used to enhance the efficiency of data collection, as it identifies some sub-sectors that need larger efforts for data collection, and some other categories where FTG homogeneity allows for less detailed data collection without hampering the quality of the models.

Freight generation

French Urban Goods Transport Survey

Heterogeneity in classification system


Ivan Sanchez-Diaz

Chalmers, Technology Management and Economics, Service Management and Logistics

Jesus Gonzalez-Feliu

Ecole des Mines de Saint-Etienne

Handbook of Research on Urban and Humanitarian Logistics

9781522581604 (ISBN)

Gothenburg Urban Freight Platform

VREF, 2014-02-01 -- 2019-12-31.

Areas of Advance


Subject Categories

Transport Systems and Logistics



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