Skip to Content
Streetsblog USA home
Streetsblog USA home
Log In
Massachusetts

Planning for Less Driving, Not More, Would Lead to Big Savings

masspirg-chart
Chart: MassPIRG

What if, instead of basing policy around the presumption that people will drive more every year, transportation agencies started making decisions to reduce the volume of driving? And what if they succeed?

A new report from the Massachusetts Public Interest Research Group quantifies what would happen in that state if driving rates come in one percentage point lower than the state DOT's current annual projections. For instance, in a year that the DOT forecasts 0.49 percent growth in driving, MassPIRG hypothesizes a 0.51 percent decrease. MassPIRG estimates that the statewide effect from now until 2030 would add up to about $20 billion in savings and 23 million metric tons of carbon emissions avoided.

The effects grow as the decline compounds over time. In the first year, a one percentage point change in driving rates would save about $167 million in avoided costs of gas, road repairs, and traffic collisions. By 2030, the savings would rise to $2.3 billion per year.

Broken down by category, the state would save about $1.9 billion on road repairs over the 15-year period. Drivers would net $3.8 billion in savings on car repairs and another $7.7 billion on gas purchases. And auto collisions would cost $6.7 billion less to society, as people avoid medical expenses, property damage, and lost wages.

The environmental benefits would be significant, with a reduction in carbon emissions rising from 226.3 thousand metric tons in 2015 to 2.4 million in 2030.

While Massachusetts has set a goal to triple the amount of miles traveled by transit, biking, and walking by 2030, the state will need more aggressive policies to achieve the kind of mileage reductions outlined in the report, MassPIRG says. The organization recommends that the state adjust its criteria for deciding which transportation projects to build to more strongly emphasize public health, the environment, and social equity.

"Even a slight decrease in our driving can make a significant impact on our environment, our budget and our public health," MassPIRG's John C. Olivieri told Streetsblog. "We call on our state leaders to prioritize road repair over expansion and incorporate VMT into project selection."

Stay in touch

Sign up for our free newsletter

More from Streetsblog USA

Wednesday’s Headlines Think Globally, Act Locally

In a world where the federal government is aligned against all your goals, what else can you do?

February 5, 2025

Study: You’re Not That Much Safer In a 4,000+ Pound Car

For decades, American car buyers believed that bigger = safer. A new study finds that rule appears to have hit a ceiling.

February 5, 2025

Op-Ed: Reviewing America’s First (and Last?) Federal ‘Reconnecting Communities’ Pilot

The Biden administration exhausted the funds of the first-in-the-nation Reconnecting Communities program before they left office. But how did they spend the money — and what can we learn about how to do better next time, if advocates ever get another bite at the apple?

February 5, 2025

Tuesday’s Headlines Are a Sanctuary

The Trump administration's latest threat would withhold funding from many big-city transit agencies and transportation projects in some blue states with "sanctuary" policies on immigration.

February 4, 2025

This Automaker Is Attacking Sustainable Transportation Even More Than You Think

The world's largest automaker has been ramping up spending to put climate change deniers in Congress, and crushing support for all kinds of sustainable modes in the process.

February 4, 2025
See all posts