Here is description of the Transportation Base:
Base: After all Action Pawns are placed, the Player may switch up to two of his or her Action Pawns with their neighbors in the same Field. Switching is done in the order of placing the Action Pawns.
Developed: The Player may either switch his or her Action Pawns or place his or her Action Pawn even if there is no free place for Action Pawn (in the fourth spot of the Field).
If we are playing a 4 player game, and I have the developed transportation base, I can place my action pawn down in the 4th spot.
Say I put it down on the "contract" track - does this mean I get to have first pick? And if there were 3 other players on it, that means one of them loses their go?