According to analysis by Inrix, a Kirkland, Wash.-based transportation software and data provider, Amazon’s May 2023 directive — and other back-to-office mandates that followed — had a significant effect on slowing down traffic on major commute routes.

The internet giant told employees on Monday that it expected them to return to the office full-time in January.

Amazon is requiring employees to be in the office five days a week starting next year, reverting to its pre-pandemic policy.