49 CFR § 393.44 - Front brake lines, protection.

---
identifier: "/us/cfr/t49/s393.44"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 393.44 - Front brake lines, protection."
title_number: 49
title_name: "Transportation"
section_number: "393.44"
section_name: "Front brake lines, protection."
chapter_name: "FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "B"
subchapter_name: "FEDERAL MOTOR CARRIER SAFETY REGULATIONS"
part_number: "393"
part_name: "PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 31136, 31151, 31502; sec. 1041(b), Pub. L. 102-240, 105 Stat. 1914, 1993; secs. 5301 and 5524, Pub. L. 114-94, 129 Stat. 1312, 1543, 1560; and 49 CFR 1.87."
regulatory_source: "33 FR 19735, Dec. 25, 1968, unless otherwise noted."
cfr_part: "393"
---


# 393.44 Front brake lines, protection.

On every bus, if equipped with air brakes, the braking system shall be so constructed that in the event any brake line to any of the front wheels is broken, the driver can apply the brakes on the rear wheels despite such breakage. The means used to apply the brakes may be located forward of the driver's seat as long as it can be operated manually by the driver when the driver is properly restrained by any seat belt assembly provided for use. Every bus shall meet this requirement or comply with the regulations in effect at the time of its manufacture.

[53 FR 49400, Dec. 7, 1988]