California Department of Transportation

Office of State Planning


The Office of State Planning (OSP) builds and maintains partnerships within the Department and with other governmental agencies and the private sector to ensure a safe, sustainable, and efficient transportation system that achieves the three Es:

  • Economic Prosperity
  • Quality Environment and
  • Social Equity.

OSP consists of three branches that all coordinate and collaborate with various stakeholders to produce comprehensive studies and guidelines, conduct tribal outreach and economic analysis, and develop the California Transportation Plan. Please see below for more information on these branches and deliverables.

State Planning Branch
The State Planning Branch is primarily responsible for the development of the CTP through collaboration and coordination with various stakeholders. Other major branch deliverables/activities include:

  • CTP
  • CTP Implementation
  • Caltrans Future of Mobility White Paper
  • CTP Guidelines
  • Statewide Transportation Projects Inventory
  • Legislative Coordination
  • Public Participation Plan
  • Public Outreach

California Transportation Plan

The Office of State Planning facilitates the development and preparation of the long-range California Transportation Plan (CTP)required by federal and State law. The CTP provides a common framework for guiding transportation decisions and investments by all levels of government and the private sector. Federal law and state law require the development and preparation of a state transportation plan. OSP also provides analysis and policy recommendations regarding current transportation issues and future trends.

Caltrans Future of Mobility White Paper

OSP worked with the UC Berkeley's Transportation Sustainability Research Center (TSRC) on the Caltrans Future of Mobility (FOM) white paper. The objective of this project was to explore the impact of technological, social, economic, and environmental change on Caltrans' long term planning process for transportation in California. The results from this study will ultimately be used to inform the scenario development for the CTP 2050. To learn more about this project, please visit our Technical Advisory Committee (TAC) webpage.

California Transportation Plan Guidelines

OSP was responsible on behalf of Caltrans to prepare the very first California Transportation Plan (CTP) Guidelines in cooperation with the California Transportation Commission (CTC). The CTC was authorized to adopt these guidelines for the preparation of the next CTP. The document is not intended to serve as a step-by-step guide for preparing the CTP. This document serves to identify statutory requirements for the CTP and inform the development of the plan by advising study areas for analysis and evaluation to ensure the CTP provides long-term, inclusive planning policy for the State transportation system.


The Statewide Transportation Projects Inventory (STPI) is the updated collection of statewide multimodal transportation projects’ geospatial data in a repository. STPI displays the current transportation system along with future multimodal projects. The repository contains constrained planned project data from the 44 MPOs and RTPAs adopted Regional Transportation Plans (RTPs) and programmed project data from the California Transportation Investment Program System (CTIPS) database when combined will provide a stand-alone GIS tool that displays both current and future investment over the next 20-years. STPI contains multimodal planned project layer(s) accessible at the Caltrans GIS library.

Public Participation Plan

The Public Participation Plan (PPP) for the California Transportation Plan (CTP) and Federal Statewide Transportation Improvement Program (FSTIP) supports Caltrans mission to involve stakeholders and the public in transportation decision making and responds to federal and state laws and regulations that require public engagement.  The PPP describes Caltrans’ strategies and techniques to inform and engage stakeholders and the public in transportation planning and programing with the purpose of maximizing participation and effectiveness.

Transportation Economics Branch (TEB)

The Transportation Economics Branch provides transportation decision makers with expert economic and financial research, analysis, and information to ensure the productive and efficient use of public resources. Major activities of this branch include:

  • Policy Analysis and Research
  • Life-Cycle Benefit/Cost Analysis
  • Economic Impact Assessment
  • Economic Research and Modeling
  • Data Forecasting and Estimation
  • Transportation Funding in California

Native American Liaison Branch (NALB)

The NALB provides leadership and direction for the Department’s effort to improve the government-to-government relationships with Tribal Governments by serving as a liaison between Caltrans; the 109 Federally-recognized Tribes in California; state, local and regional transportation agencies; and other key stakeholders. NALB facilitates compliance with Departmental policy and federal statutes and regulations requiring that Tribal Governments be involved in transportation planning and programming processes. Please visit NALB’s website for more specific information on this branch.