The most recent and complete transportation model documentation is available on Pardee's website. Although the text in this interactive system is, for some IFs models, often significantly out of date, you may still find the basic description useful to you.
The transportation model may eventually consist of a module that represents total demand for transportation services in countries and regions and of additional modules that represent how individual societies meet individual and commercial transportation needs. At this stage, however, the transportation module focuses exclusively on annual sales of cars and trucks.
To read more about the transportation module, please click on the links below.