STOPS – FTA’s Simplified Trips-on-Project Software

At their option, sponsors of New Starts and Small Starts projects may use a simplified method developed by FTA to quantify the measures used by FTA to evaluate and rate projects. STOPS is a limited implementation of the conventional “4-step” travel model. STOPS replaces the standard “trip generation” and “trip distribution” steps with the Census Transportation Planning Package (CTPP) – tabulations from the 2000 Census (and soon, the American Community Survey) to describe overall travel markets. It also replaces the traditional “coded” transit network with standard transit-services data in the General Transit Feed Specification (GTFS) format. More detail is available in an overview of STOPS and its component procedures.

Project sponsors who choose to apply STOPS will need to:

  1. Get STOPS documentation and software;
  2. Get the appropriate data from the Census;
  3. Obtain supporting information from the regional travel model; and
  4. Obtain current GTFS data for their individual metro areas.

Data for STOPS calibration and validation included detailed rider surveys from six metro areas and station-level count data from nine other metro areas. Together, these 15 metro areas have 24 fixed-guideway systems (six commuter rail, one heavy rail, 13 light rail, two bus rapid transit, and two streetcar).

STOPS produces all reporting needed by project sponsors to review its ridership forecasts in detail and to support grant applications to the FTA New Starts and Small Starts programs.

FTA anticipates that the local installation of STOPS and assembly of the required input information will require one to two weeks of effort by a capable travel-forecasting professional. FTA anticipates that preparation of project forecasts will require one additional week for straightforward projects and two to three additional weeks for complex projects.

FTA provides technical assistance to project sponsors using STOPS to prepare project forecasts. After you have read the User Guide, installed the software, and made progress towards producing forecasts for your project, you can contact Pete Mazurek ( or 202-366-1627) with questions or with a request for help from an FTA-provided contractor.