CFR›Title 45›Subtitle A›Part 3›Subpart B ContainsSections 3.21–3.27CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart B—Traffic Regulations Sections 3.21 § 3.21 Emergency vehicles. 3.22 § 3.22 Request for identification. 3.23 § 3.23 Parking. 3.24 § 3.24 Parking permits. 3.25 § 3.25 Servicing of vehicles. 3.26 § 3.26 Speed limit. 3.27 § 3.27 Bicycles. Previous A Subpart A—General Next C Subpart C—Facilities and Grounds