The rules and regulations for 2012 can be downloaded here .

This is an excerpt about the classifications

General classification            Yellow jersey
Points classification              Green jersey
Specials classification          White jersey
Girls classification                Pink jersey

When a rider leads in several classifications, he or she wears the shirt of the highest classification. The rider taking second place in the subsequent classification receives and wears the jersey belonging to that classification.

When riders are equally placed, the times of the prologue and individual time trial (in this order) are decisive.

When riders are equally placed in the points classification, the amount of points obtained in the final stage, subsequently the penultimate stage will be decisive.