Home › CFR › Title 23 › Part 62023 CFR Part 620 — EngineeringSubpart A — Highway Improvements in the Vicinity of Airports§ 620.101— Purpose.§ 620.102— Applicability.§ 620.103— Policy.§ 620.104— Standards.Subpart B — Relinquishment of Highway Facilities§ 620.201— Purpose.§ 620.202— Applicability.§ 620.203— Procedures.