WASHINGTON — The Department of Transportation is doubling down on its campaign against “DEI bike lanes,” as Transportation Secretary Sean Duffy called them in a social media post earlier this month.

The Federal Highway Administration has quietly stripped bike lanes, speed cameras and several other best practices from a list of “Proven Safety Countermeasures,” as they’re known, that have been shown to reduce crashes and save lives.

The FHWA says the changes to its website, which have not been previously reported, are part of a broader review of safety countermeasures to ensure they align with current DOT policies and the administration’s priorities. But critics say the Trump administration is undermining safety strategies that have already been proven to work.

“We should be making decisions about safety based on evidence,” Stephanie Pollack, the former acting administrator of the FHWA under President Biden, told NPR. “It’s hard for me to understand how you could say you’re putting safety first, and then make arbitrary decisions about what does and doesn’t improve safety.”

Pollack oversaw the most recent expansion of the Proven Safety Countermeasures program in 2021, when the list grew to a total of 28 recommended strategies for state and local planners to consider. In recent weeks, she said, the FHWA has removed five of those strategies, including bike lanes, speed safety cameras, variable speed limits, and two other recommendations.

The FHWA has not publicly announced or explained the decision to cut the list of safety strategies from 28 items to the current total of 23.

In a statement to NPR, an FHWA spokesperson said the DOT is “taking action to reverse the last administration’s policies that decreased lane capacity and increased congestion.”

“Drivers paying taxes and vehicle fees expect their dollars to be reinvested into our roads, not social initiatives that burden their commutes,” the statement said. “Under Secretary Duffy, the Department is getting back to basics and putting safety first.”

Bike lanes are not a new target for the DOT. The Trump administration previously tried to remove a stretch of bike lanes around the National Mall in Washington, D.C., and pulled back funding for projects across the country that it deemed “hostile” to cars.