New
DPDP Act compliance check for companies
, core duties apply from 13 May 2027
Know more
Justis AI
Product
Solutions
Use cases
Resources
Pricing
Sign In
Book Now
US law
Federal (United States)
Regulations
Title 49 CFR — Transportation
Chapter III — FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
Part 325 — COMPLIANCE WITH INTERSTATE MOTOR CARRIER NOISE EMISSION STANDARDS
Subpart D — Measurement of Noise Emissions; Highway Operations
Federal (United States) · Regulations
Subpart D — Measurement of Noise Emissions; Highway Operations
4 sections
4 sections
49 C.F.R. § 325.31
Scope of the rules in this subpart.
49 C.F.R. § 325.33
Site characteristics; highway operations.
49 C.F.R. § 325.37
Location and operation of sound level measurement system; highway operations.
49 C.F.R. § 325.39
Measurement procedure; highway operations.
Subpart D — Measurement of Noise Emissions; Highway Operations | Federal (United States) Regulations | Justis AI