 The TPO is governed by a TPO Board, which is composed of elected officials, representatives from the St. Lucie County School Board, and representatives from Community Transit, a division of The Council on Aging of St. Lucie, Inc.The original bus system started out as a demand response service bus in the 1990s, it only served St. Lucie County.Soon it expanded to a fixed route system, going to predetermined locations along a route.