Fromtraffic +‎-free.

traffic-free (notcomparable)

1. Of a road or area, free of, without, or devoid of road traffic.
   • 2021 August 25, Howard Johnston, “Regional News: London”, inRAIL, number938, page27:

     Oxford Circus: Two new entrances to the Underground station are planned, to comply with Westminster Council's intention to make Oxford Streettraffic-free from November.

• “traffic-free”, inLexico,Dictionary.com;Oxford University Press,2019–2022.