LANCASTER, Pa. — The streets of this Colonial-era city are old and narrow, with blocks of 19th century brick rowhouses sitting just feet from the sidewalk.

“It's definitely slowed traffic,” Sorace said last month as she led a walking tour for Transportation Secretary Pete Buttigieg to show off the changes the city is making.

Tensions like this are playing out across the country, in cities large and small, that are using this unprecedented outlay of federal cash to redesign dangerous streets and intersections.

They met for nearly an hour with Buttigieg and other leaders at the Department of Transportation to talk about what they’re doing to make their streets safer and how they navigate local pushback.

Flagstaff is using federal funding to install new protections for cyclists and pedestrians on one of her city’s most dangerous roads, Daggett said, that’s seen hundreds of crashes in recent years.

Seattle Mayor Bruce Harrell says his city has been adding dozens of “No Turn On Red” signs, and local drivers are not happy about it.

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