15 CFR § 265.21 - Improper use of roads as thoroughfares.

---
identifier: "/us/cfr/t15/s265.21"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "15 CFR § 265.21 - Improper use of roads as thoroughfares."
title_number: 15
title_name: "Commerce and Foreign Trade"
section_number: "265.21"
section_name: "Improper use of roads as thoroughfares."
chapter_name: "NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, DEPARTMENT OF COMMERCE"
subchapter_number: "F"
subchapter_name: "REGULATIONS GOVERNING TRAFFIC AND CONDUCT"
part_number: "265"
part_name: "REGULATIONS GOVERNING TRAFFIC AND CONDUCT ON THE GROUNDS OF THE NATIONAL INSTITUTE OF STANDARDS & TECHNOLOGY, GAITHERSBURG, MARYLAND, AND BOULDER AND FORT COLLINS, COLORADO"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Sec. 9, 31 Stat. 1450, as amended (15 U.S.C. 277). Applies sec. 1, 72 Stat 1711, as amended, (15 U.S.C. 278e(b))."
regulatory_source: "39 FR 41170, Nov. 25, 1974, unless otherwise noted."
cfr_part: "265"
---


# 265.21 Improper use of roads as thoroughfares.

Except as otherwise provided herein, no person shall drive a motor vehicle or bicycle onto the site for the sole purpose of using the roads of the site as a thoroughfare between roads bordering the site. This section shall not apply to bicyclists using officially approved bike paths on the site.