Travel Demand Model outputs (TDM outputs) are used for determining future traffic volumes based on changes in land use, population, employment, and other demographical factors. TDMs also incorporate planned and approved future projects. MPOs have a TDM for their specific jurisdiction. TDM outputs may help with analyzing future growth of traffic, providing insight in travel patterns, and identifying areas for traffic improvements.

TxDOT also has a SAM which includes areas outside of the MPO TDM boundaries. The SAM encompasses all the State’s major highways, ports of entry at the border with Mexico, and some freight corridors that tie in with the rest of the United States.