Department of Transportation
DOT
Content Hash:
acfd70cecddfdb33130ba80131b70f56
MD5 checksum of all regulatory content as of Oct 15, 2025
Regulatory Word Count Over Time
Total words across all chapters managed by this agency
Earliest:
2,115 words
(Jan 01, 2017)
Latest:
152,248 words
(Oct 15, 2025)
Change:
+150,133
(7098.5%)
CFR Chapters
Title 2, Chapter XII
CHAPTER XII - DEPARTMENT OF TRANSPORTATION
Title 44, Chapter IV
CHAPTER IV - DEPARTMENT OF COMMERCE AND DEPARTMENT OF TRANSPORTATION
Title 48, Chapter 12
CHAPTER 12 - DEPARTMENT OF TRANSPORTATION
Title 5, Chapter L
CHAPTER L - DEPARTMENT OF TRANSPORTATION
Sub-Agencies (12)
Federal Aviation Administration Commercial Space Transportation, Department of Transportation
AST
Federal Aviation Administration, Department of Transportation
FAA
Federal Highway Administration, Department of Transportation
FHWA
Federal Motor Carrier Safety Administration, Department of Transportation
FMCSA
Federal Railroad Administration, Department of Transportation
FRA
Federal Transit Administration, Department of Transportation
FTA
Great Lakes St. Lawrence Seaway Development Corporation, Department of Transportation
SAINT
Maritime Administration, Department of Transportation
MARAD
National Highway Traffic Safety Administration, Department of Transportation
NHTSA
Pipeline and Hazardous Materials Safety Administration, Department of Transportation
PHMSA
Office of Secretary (Aviation Proceedings), Department of Transportation
Office of Secretary of Transportation, Department of Transportation