{"data":{"id":"us/45-cfr-3.21","jurisdiction":"us","citation":"45 CFR 3.21","heading":"Emergency vehicles.","body":"A person must yield the right of way to an emergency vehicle operating its siren or flashing lights.","path":["Title 45—Public Welfare","SUBTITLE A—Department of Health and Human Services","SUBCHAPTER A—GENERAL ADMINISTRATION","PART 3—CONDUCT OF PERSONS AND TRAFFIC ON THE NATIONAL INSTITUTES OF HEALTH FEDERAL ENCLAVE","Subpart B—Traffic Regulations"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-45.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:21Z","sha256":"e085a856117656b1c4c858d1d039dd7344d211523414850ff9529c6652ea0c51","source_id":"us-cfr","stale":true,"prev":"us/45-cfr-3.6","next":"us/45-cfr-3.22"},"notice":"GroundRules: Original legal text. Not legal advice."}