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 have released a package of updates and new TCI materials for public feedback. The materials were revised based on public input and discussions with the other 8 TCI states.

    The package includes a finished Model Rule. It's been revised in consideration of public input received on a March 2021 draft. The Model Rule serves as a framework for setting compliance requirements for fuel suppliers. It also would set a consistent declining cap on transportation-based carbon emissions.

    Learn More:

    December 21, 2020

    Massachusetts, Connecticut, Rhode Island, and the District of Columbia are the first to launch a 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), Massachusetts is working to build a regional program to cap and reduce transportation-based greenhouse gas emissions. Proceeds will be used to invest in a low-carbon transportation system. This system will be cleaner, more resilient, and fair.

    In December 2018, Massachusetts joined 8 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 on their goals 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 main goal of TCI is to lower the climate impacts of vehicles and fuels, Massachusetts focuses on helping specific communities. These cities, towns, and populations face limited transportation options and pollution burdens.

    Massachusetts held 11 regional workshops over the summer and fall of 2019. These workshops aimed 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 encourages 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

    States that participated in TCI’s regional policy design process studied the “cap-and-invest” program and other initiatives that set a price for emissions from vehicles and fuels. The goal of this process was to:

    • improve transportation, especially in under-served communities, and
    • reduce carbon emissions and other types of air pollution.

    A year-long policy development process encouraged input from stakeholders and the public. The final TCI policy, along with other efforts, would help our state meet the requirements of its Global Warming Solutions Act.

    The Georgetown Climate Center facilitates the TCI's regional policy design.

    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 contains an overview of regional greenhouse challenges and opportunities. It also summarizes information from:

    • public input sessions across participating states, and
    • the regional policy development process.

    Additional Resources

    Cap-and-Invest Overview

    Cap-and-invest is a policy tool used around the world. It aims to limit emissions from certain industries or sectors of the economy. This document outlines the cap-and-invest approach and policy design process.

    Additional Resources