Transportation Planning

Transportation planning in Pennsylvania begins at the local level. As populations shift, new developments are constructed, businesses grow and the transportation needs of a region change. PennDOT and the STC work together with our regional Planning Partners (MPOs, RPOs and one independent county) to develop several transportation planning tools:

  • The Long Range Transportation Plan (LRTP) is a 20-year outlook based on local knowledge, Census data, models and technical analyses to predict future transportation needs of individual regional areas.
  • The Twelve Year Transportation Program (TYP) is a mid-range collaborative planning tool that provides a 12-year outlook and is updated by PennDOT with input from its Planning Partners for adoption by the STC every two years.
  • The Statewide Transportation Improvement Program (STIP) is a short, four-year outlook covering the entire state of PA that is required to be updated every four years by Federal Law. PA updates their STIP every two years in conjunction with the TYP.
  • The Transportation Improvement Program (TIP) is a short, four-year outlook that is submitted by each of Pennsylvania’s MPOs and RPOs and one independent county. These 24 individual TIPs make up the STIP.
2019 TYP Process Chart

The TYP is updated every two years. As part of the update process, public input is sought through various outreach efforts. Learn more at the following links: