---
kind: "unit"
title: "23"
title_heading: "Highways"
key: "chI/subchG/part630/subpartJ"
level: "subpart"
label: "Subpart J"
heading: "Work Zone Safety and Mobility"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/23/chI-subchG-part630-subpartJ"
sections_count: 9
---

# Subpart J — Work Zone Safety and Mobility

Title 23 C.F.R. — Highways › Chapter I — Federal Highway Administration, Department of Transportation › Subchapter G — Engineering and Traffic Operations › Part 630 — Preconstruction Procedures

## Sections

- [§630.1002. Purpose.](/cfr/23/630.1002.md)
- [§630.1004. Definitions and explanation of terms.](/cfr/23/630.1004.md)
- [§630.1006. Work zone safety and mobility policy.](/cfr/23/630.1006.md)
- [§630.1008. State-level processes and procedures.](/cfr/23/630.1008.md)
- [§630.1010. Significant projects.](/cfr/23/630.1010.md)
- [§630.1012. Project-level procedures.](/cfr/23/630.1012.md)
- [§630.1014. Implementation.](/cfr/23/630.1014.md)
- [§630.1016. Compliance date.](/cfr/23/630.1016.md)
- [§630.1018. Incorporation by reference.](/cfr/23/630.1018.md)