REGULATIONS
Rulings
AD/CVD
Notices
HTSUS
U.S. Code
Regs
More
Ports
About
Updates
Apps
Larger font
Smaller font
SEARCH
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
Regulations last checked for updates: Jul 16, 2026
Title 49 - Transportation last revised: Jul 14, 2026
All Titles
Title 49
Chapter III
Part 325
Subpart A - Subpart A—General Provisions
§ 325.1 - Scope of the rules in this part.
§ 325.3 - [Reserved]
§ 325.5 - Definitions.
§ 325.7 - Allowable noise levels.
§ 325.9 - Measurement tolerances.
authority:
42 U.S.C. 4917
;
49 U.S.C. 301
; and
49 CFR 1.87
source:
40 FR 42437, Sept. 12, 1975, unless otherwise noted.
.list_box li,p,.cm-search-info,.cm-search-detail,.abt span,.expand-collapse_top
Get the CustomsMobile app!