Transportation Agencies Will Finally Measure the Movement of People, Not Just Cars

A crowded 38 bus in San Francisco
New standards from U.S. DOT will ensure that 40 people in a bus count more than one person driving an SUV. Photo: SFMTA

“What you measure is what you get,” the saying goes, and for a long time, America’s transportation policy establishment was obsessed with measuring one thing: car congestion. Hundreds of billions of dollars have been spent in the quest for free-flowing vehicular traffic. The result is wider highways, more sprawl, and more people stuck in congestion.

But this week U.S. DOT took an important step to change course, releasing new standards to guide how transportation agencies measure their performance. Advocates for transit and walkability say the policy is a significant improvement.

Advocates sent 5,000 letters to U.S. DOT urging them to consider a smarter and more modern approach to managing congestion. Photo: Transportation for America
U.S. DOT received 5,000 letters urging the agency to measure the movement of people, not just cars and trucks. Photo: Transportation for America

An earlier draft of these rules would have codified outdated highway-era dogma, emphasizing the movement of cars and trucks as a primary goal. Thousands of comments poured in demanding an approach that factors in the value of transit, biking, and walking — and the agency listened.

The revised U.S. DOT standards will lead agencies to assess their work in ways that support investments in transit and active transportation, according to Stephen Lee Davis at Transportation for America, which led the charge to reform the rule. Keep in mind that funding is not at stake here — U.S. DOT can’t reward or punish state DOTs based on how they perform. But state DOTs will now have to set new goals and report on their progress, and advocates will have new ways to hold transportation policy makers accountable.

Davis has identified four key wins in U.S. DOT’s new rule, which, it’s worth noting, can’t be struck down easily, because it’s the product of a lengthy regulatory process mandated by the 2012 federal transportation bill. Here’s our summary of the final regulation from U.S. DOT.

1. States will measure the movement of people, not just vehicles

U.S. DOT’s previous version of the rule measured roads that move the highest number of vehicles were the most successful. If some of those vehicles were buses holding 40 people, they would count the same as a single person driving an SUV.

The final rule incorporates a measure of “person-hours” of delay rather than just “vehicle hours.” That means spatially efficient solutions like exclusive transit lanes won’t be penalized for supposedly worsening the congestion problem.

2. State DOTs will have to track their impact on carbon emissions

For the first time, state transportation agencies will be required to monitor and forecast the impact of their projects on greenhouse gas emissions. The rule will apply to any alteration of roads in the National Highway System, which includes not just interstates but many state highways and major urban streets as well. Transportation emissions are the single biggest source of carbon emissions in the U.S., and this acknowledgment that DOTs should address the problem is long overdue.

3. People who walk, bike, or ride transit will be counted

The U.S. DOT rule creates a “multi-modal” performance measure that will track “non-single occupant vehicle travel.” States will have to establish targets to increase walking, biking, and transit use.

U.S. DOT is also leading a research project to help states and local agencies development better tools to measure how much people walk and bike — a big missing piece in transportation agencies’ toolkits.

4. Free-flowing rush hour car traffic isn’t the goal

Originally, U.S. DOT wanted to measure congestion by comparing rush-hour travel times to free-flowing traffic conditions. That framework rewards road expansion and sprawl, and it’s been the basis for a lot of wasteful highway spending.

In response to comments, U.S. DOT dropped this problematic measure altogether.


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