A lot has changed over the past year and hat includes what times interstates and highways see the most traffic.

Traffic is returning as people head back to work in-person, but researchers are seeing a difference.

Streetlight data looked at traffic patterns in big cities and it found by March of this year, morning rush hour traffic had rebounded. But it still wasn’t at pre-pandemic levels.

Instead traffic built slowly throughout the day, culminating in a big afternoon rush.

Researchers have some theories about this new pattern. They think people who continue to work from home are not necessarily staying at home.