Motorists had faced delays heading from Kent to Essex, National Highways says.
Residents say the people in the cars in Dartford boat about driving up to 135mph (217km/h).
Sarada Simkhada, who works at Darent Valley Hospital, was on a pilgrimage when disaster struck.
Businesses say customers were angry when Ulez expanded, but campaigners point to health benefits.
Oliver Dryden stamped on his victim's head after a minor crash in January 2025, police say.
Residents of Horton Kirby, South Darenth and Sutton-at-Hone say they have to keep windows closed.
Two Kent hospital trusts knew of issues with waiting lists for years before acting, a review finds.
Some taps at Darent Valley Hospital in Dartford still cannot be used in parts of the site.
