Planning Tools


CCTA maintains several tools to support its transportation planning and growth management activities. CCTA also makes these tools available to local jurisdictions and agencies to support their planning efforts. These include:

  • The Countywide Travel Demand Model - providing traffic forecasts through the year 2030.
  • Technical Procedures - to assist local staff and consultants in conducting traffic impact studies, developing Action Plans for Routes of Regional Significance, and assessing level of service on Basic Routes.
  • Comprehensive Transportation Project Li... more
Comprehensive Transportation Project List (CTPL)

To support its planning, programming and modeling efforts, CCTA maintains a database of transportation projects called the Comprehensive Transportation Project List (CTPL). This database lists transportation projects for which jurisdictions and agencies are seeking federal or State funding.

CCTA has used the CTPL to create the required seven-year Capital Improvement Program (CIP) for the Congestion Management Programs (CMPs) and to define the "universe of projects" used in the Countywide Comprehensive Transportation Plan (CTP). More recently, CCTA used the CTPL to support the decenni... more

Travel Demand Model
Both the Measure C Growth Management Program (GMP) and the State congestion management legislation require CCTA to develop and maintain a travel demand model. These models use information on current and future population and employment, transit ridership, expected roadway improvements, and observed travel behavior to forecast traffic on the regional transportation system. The travel demand model is used in several ways: 

  • Local agencies use it to analyze the effects of new development and changes in their general plans. 
  • Various agencies, including CCTA a... more
Land Use Information System (LUIS)

Estimates of land use and demographics, both current and future, are essential parts of travel forecasting. CCTA maintains a detailed database of land use and demographics, known as the Land Use Information System (LUIS), for use in its Countywide Travel Demand Model.

The LUIS lists the existing and forecast number of households and jobs by Traffic Analysis Zones (TAZs). CCTA developed these detailed forecasts from census-tract-level forecasts prepared by the Association of Bay Area Governments (ABAG). ABAG usually prepares a new set of forecasts every other year and CCTA uses those ... more

System Monitoring
As part of its transportation planning and growth management responsibilities, CCTA periodically monitors the performance of the transportation system in Contra Costa. Two of the main efforts are the monitoring of the Multimodal Transportation Service Objectives (MTSOs) in the Measure C Growth Management Program (GMP) as part of updates of the Action Plan for Routes of Regional Significance and the Countywide Comprehensive Transportation Plan (CTP), along with the monitoring of level-of-service standards as part of the Authority's biennial Congestion Management Program... more