This page, Transportation & Climate Initiative (TCI), is part of
This page, Transportation & Climate Initiative (TCI), is offered by

Transportation & Climate Initiative (TCI)

TCI is a regional collaboration of Northeast and Mid-Atlantic jurisdictions, working together since 2010 to improve transportation, develop the clean energy economy, and reduce emissions from vehicles and fuels.

    Table of Contents

    News & Updates

    June 10, 2021

    Massachusetts, Connecticut, Rhode Island, and the District of Columbia - responding to extensive public input and in consultation with the other eight collaborating TCI states - have released a package of updates and new materials for public feedback.  

    The package includes a finished Model Rule - revised after consideration of public input received since a draft was released in March - to serve as a common framework for participating jurisdictions to use in setting compliance requirements for fuel suppliers and a consistent declining cap on carbon emissions from transportation fuels.  

    Learn More:

    December 21, 2020

    Massachusetts, Connecticut, Rhode Island and the District of Columbia are the first to launch a groundbreaking program to cut transportation pollution and invest in communities.

    The Transportation & Climate Initiative Program (TCI-P) will invest $300 million every year to modernize transportation, improve public health, and combat climate change.

    Learn More:


    Massachusetts is part of the multi-state Transportation & Climate Initiative (TCI), which is working to build a regional program that would cap and reduce greenhouse gas emissions from the transportation sector across the Northeast and Mid-Atlantic, and invest the proceeds in a cleaner, more resilient, and more equitable low-carbon transportation system.

    In a December 2018 News Release, Massachusetts joined with eight other states (Connecticut, Delaware, Maryland, New Jersey, Pennsylvania, Rhode Island, Vermont, Virginia) and Washington, D.C., in a new effort to develop a regional policy for low-carbon transportation. As part of the effort, the jurisdictions issued a statement describing the goal of their collaboration to:

    “…design a regional low-carbon transportation policy proposal that would cap and reduce carbon emissions from the combustion of transportation fuels through a cap-and-invest program or other pricing mechanism… [and]… to complete the policy development process within one year, after which each jurisdiction will decide whether to adopt and implement the policy.”

    Additional Resources

    TCI Draft Framework

    TCI released a framework for the draft regional policy proposal. The proposal addresses reducing greenhouse gas pollution from transportation. 

    While the overall goal of TCI is to reduce the far-reaching climate impacts of vehicles and fuels, Massachusetts is particularly focused on delivering benefits to communities that are under-served by current transportation options and disproportionately burdened by pollution.

    Over the summer and fall of 2019, Massachusetts state agencies held eleven regional workshops to engage with the public and seek input on the draft TCI proposal. 

    See Additional Resources below for the draft framework and a report on the Massachusetts workshops.

    TCI member jurisdictions have also encouraged interested individuals and organizations to provide feedback in writing via the TCI online portal. See what they've had to say.

    Additional Resources

    Policy Design Process

    The states participating in TCI’s regional policy design process are studying options to reduce carbon emissions through a “cap-and-invest” program or other mechanism that establishes a price for transportation emissions. The goals of this process are to improve transportation, especially in underserved communities, and to reduce carbon emissions as well as other types of air pollution.

    A year-long policy development process has included many opportunities for input from stakeholders and the public. Member states are now deciding whether to adopt and implement TCI. The final TCI policy, along with other efforts by Massachusetts to reduce emissions, would help to our state meet the requirements of its Global Warming Solutions Act.

    TCI’s regional policy design process is facilitated by the Georgetown Climate Center on behalf of the participating jurisdictions. 

    Massachusetts agencies supporting the process are:

    • Executive Office of Energy & Environmental Affairs (EEA)
    • Department of Environmental Protection (MassDEP)
    • Department of Transportation (MassDOT)

    TCI Fact Sheet

    The TCI Fact Sheet provides an overview of the regional greenhouse challenges and opportunities. It also shares information from public input sessions across participating states, and a summary of the regional policy development process.

    Additional Resources

    Cap-and-Invest Overview

    Cap-and-invest is a policy tool that has been used in the United States and around the world to limit the total amount of emissions from an industry or the whole economy. This document provides an outline of the cap-and-invest program and the policy design process.

    Additional Resources