Colorado Emissions Reduction Plan Ties Sustainable Transportation to State Funding

The state’s Greenhouse Gas Planning Standard uses tangible financial penalties to prioritize transportation projects that reduce emissions.

1 minute read

February 6, 2023, 7:00 AM PST

By Diana Ionescu @aworkoffiction


Aerial view of downtown Denver, Colorado with freeway in foreground

The The Denver Regional Council of Governments (DRCOG) will reallocate funds planned for an expansion of Interstate 25 and C-470 to bus rapid transit projects. | Leeweh / Denver, Colorado

In a guest post on TransitCenter, Planetizen’s own James Brasuell outlines a new Colorado rule that “rearranges regional capital investment plans to prioritize the transportation modes that most effectively reduce greenhouse gas (GHG) emissions: public transit, walking, and biking.”

The state adopted its GHG Transportation Planning Standard in December 2021, requiring its five metropolitan planning organizations (MPOs) to set clear emissions reduction goals. “Under the GHG Transportation Planning Standard, MPOs failing to meet greenhouse gas targets (GHG) targets are required to develop mitigation action plans” that contribute to “good projects,” i.e. those that help reduce vehicle miles driven and promote alternate modes of transportation.

Brasuell describes the broad-based coalition that grew around the effort to develop the Planning Standard, which encompassed various levels of government and nongovernmental advocates. Already, the Denver Regional Council of Governments (DRCOG) scrapped a freeway expansion plan due to the Planning Standard.

Colorado’s plan could well serve as a model for other states. “While many states’ climate plans are completely separate from their actual expenditure plans, the mode shift required by Colorado’s GHG Transportation Planning Standard will be enforced with tangible fiscal penalties–a degree of financial consequences not achieved by other laws around the country, such as California’s SB 375.”

Friday, February 3, 2023 in TransitCenter

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

October 28, 2026 - Zachary Whalen

A car drives through a puddle, making a large splash. Rain pours down.

California plans to bury El Niño’s downpour

If the state plays its cards right, it may be able to store a billion acre-feet of El Niño’s water in aquifers.

October 28, 2026 - Grist

A pencil rendering of Foundry Park, which shows skyscrapers and public green spaces.

Chicago breaks ground on $3 billion megadevelopment

The new neighborhood, titled Foundry Park, will one day host 3,700 residences.

October 23, 2026 - Chicago Sun Times

A swamp in South Carolina with tall pale trees and Spanish moss in the water.

Satanic place names

From streams and lakes to valleys and canyons, I mapped more than 1,000 places named after the Devil.

October 31 - The Daily Yonder

A rendering of a high speed rain station in California, with wide platforms and a sleep train with yellow highlights.

California High-Speed Rail Authority CEO resigns after $600,000 scandal

Under Ian Choudri, the authority used taxpayer dollars to fund first class flights and trips to nightclubs.

October 30 - Cal Matters

 A bridge stretches across the Missouri River at Chamberlain, South Dakota.

Want to study the Missouri River? Soon, you may need unanimous approval from 10 states

Legislation would require 10 governors’ permission to study or build projects moving water outside the basin.

October 30 - South Dakota Searchlight