Department of Transportation (DOT)
6,411,356Words in 620 parts
13.8Restriction density (per 1,000 words)
18.0Reading grade
45.5%Unchanged since 2017
47Flagged parts
2026-10-28Last change
Section changes per year
From the eCFR versioner, for the parts that the agency owns now. Before 2017 is the baseline load.
Text and size
- Sentences
- 32.2 words on average; 25.5% over 40 words; 32.9% passive; 12.3 cross-references per 1,000 words
- Sentence types
- definition 6.0% · prohibition 3.8% · paperwork 6.4% · obligation 26.4% · permission 8.3% · other 49.0%
- Checksum
d67ee798bd8fca0db821a21ec24c3c8353c71a968e74a318a99ecf056dd0e515
Review candidates in this agency
| Rank | Part | Words | Score |
|---|---|---|---|
| 36 | 49 CFR 577
DEFECT AND NONCOMPLIANCE NOTIFICATION
High signals: Paperwork share
+2.9 SD · Directive share
+1.8 SD · Reading grade
+1.6 SD · Restriction density
+1.5 SD |
6,807 | 1.45 |
| 41 | 49 CFR 370
PRINCIPLES AND PRACTICES FOR THE INVESTIGATION AND VOLUNTARY DISPOSITION OF LOSS AND DAMAGE CLAIMS AND PROCESSING SALVAGE
High signals: Paperwork share
+4.6 SD · Directive share
+2.7 SD · Reading grade
+1.9 SD · Restriction density
+1.4 SD |
1,869 | 1.42 |
| 57 | 49 CFR 591
IMPORTATION OF VEHICLES AND EQUIPMENT SUBJECT TO FEDERAL SAFETY, BUMPER AND THEFT PREVENTION STANDARDS
High signals: Reading grade
+4.9 SD · Directive share
+1.4 SD |
8,379 | 1.31 |
| 61 | 49 CFR 573
DEFECT AND NONCOMPLIANCE RESPONSIBILITY AND REPORTS
High signals: Paperwork share
+2.3 SD · Directive share
+1.8 SD · Reading grade
+1.5 SD |
9,878 | 1.29 |
| 98 | 49 CFR 592
REGISTERED IMPORTERS OF VEHICLES NOT ORIGINALLY MANUFACTURED TO CONFORM TO THE FEDERAL MOTOR VEHICLE SAFETY STANDARDS
High signals: Paperwork share
+2.3 SD · Reading grade
+1.9 SD · Directive share
+1.2 SD |
9,450 | 1.16 |
| 123 | 46 CFR 380
PROCEDURES
High signals: Paperwork share
+3.5 SD · Directive share
+1.5 SD |
2,553 | 1.09 |
| 140 | 46 CFR 232
UNIFORM FINANCIAL REPORTING REQUIREMENTS
High signals: Restriction density
+2.4 SD · Paperwork share
+2.0 SD · Directive share
+1.7 SD |
5,498 | 1.06 |
| 156 | 46 CFR 356
REQUIREMENTS FOR VESSELS OF 100 FEET OR GREATER IN REGISTERED LENGTH TO OBTAIN A FISHERY ENDORSEMENT TO THE VESSEL'S DOCUMENTATION
High signals: Reading grade
+3.6 SD · Paperwork share
+1.6 SD |
17,790 | 1.05 |
| 162 | 33 CFR 403
RULES OF PROCEDURE OF THE JOINT TOLLS REVIEW BOARD
High signals: Paperwork share
+2.8 SD · Directive share
+2.2 SD · Restriction density
+1.5 SD |
1,370 | 1.05 |
| 168 | 49 CFR 246
CERTIFICATION OF SIGNAL EMPLOYEES
High signals: Paperwork share
+2.7 SD · Directive share
+1.8 SD · Size
+1.3 SD · Restriction density
+1.1 SD |
25,968 | 1.04 |
| 174 | 49 CFR 537
AUTOMOTIVE FUEL ECONOMY REPORTS
High signals: Paperwork share
+3.6 SD · Restriction density
+1.6 SD · Directive share
+1.5 SD |
5,628 | 1.03 |
| 209 | 14 CFR 221
TARIFFS
High signals: Restriction density
+2.1 SD · Directive share
+1.4 SD · Paperwork share
+1.2 SD |
17,055 | 0.98 |
| 213 | 49 CFR 579
REPORTING OF INFORMATION AND COMMUNICATIONS ABOUT POTENTIAL DEFECTS
High signals: Paperwork share
+2.6 SD · Reading grade
+1.0 SD |
17,797 | 0.97 |
| 246 | 46 CFR 202
PROCEDURES RELATING TO REVIEW BY SECRETARY OF TRANSPORTATION OF ACTIONS BY MARITIME SUBSIDY BOARD
High signals: Paperwork share
+3.2 SD · Directive share
+1.2 SD |
2,494 | 0.94 |
| 259 | 14 CFR 29
AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT
High signals: Restriction density
+2.1 SD · Size
+2.1 SD · Directive share
+1.5 SD |
70,315 | 0.92 |
| 261 | 49 CFR 174
CARRIAGE BY RAIL
High signals: Directive share
+2.5 SD · Restriction density
+1.4 SD |
18,543 | 0.92 |
| 268 | 49 CFR 178
SPECIFICATIONS FOR PACKAGINGS
High signals: Size
+2.8 SD · Restriction density
+2.6 SD · Directive share
+1.7 SD |
161,960 | 0.91 |
| 269 | 49 CFR 380
SPECIAL TRAINING REQUIREMENTS
High signals: Restriction density
+3.0 SD · Directive share
+2.9 SD · Size
+1.1 SD |
22,146 | 0.91 |
| 278 | 49 CFR 179
SPECIFICATIONS FOR TANK CARS
High signals: Restriction density
+2.5 SD · Directive share
+2.3 SD · Size
+1.6 SD |
40,303 | 0.90 |
| 289 | 49 CFR 240
QUALIFICATION AND CERTIFICATION OF LOCOMOTIVE ENGINEERS
High signals: Directive share
+1.7 SD · Size
+1.5 SD · Reading grade
+1.4 SD · Paperwork share
+1.3 SD |
34,761 | 0.90 |
| 326 | 49 CFR 245
QUALIFICATION AND CERTIFICATION OF DISPATCHERS
High signals: Paperwork share
+2.3 SD · Directive share
+1.6 SD · Size
+1.2 SD · Restriction density
+1.2 SD |
23,377 | 0.87 |
| 335 | 14 CFR 205
AIRCRAFT ACCIDENT LIABILITY INSURANCE
High signals: Directive share
+1.9 SD · Restriction density
+1.9 SD |
2,735 | 0.86 |
| 337 | 14 CFR 68
REQUIREMENTS FOR OPERATING CERTAIN SMALL AIRCRAFT WITHOUT A MEDICAL CERTIFICATE
High signals: Reading grade
+5.2 SD · Directive share
+1.1 SD |
2,067 | 0.86 |
| 342 | 14 CFR 380
PUBLIC CHARTERS
High signals: Directive share
+1.5 SD · Restriction density
+1.1 SD · Reading grade
+1.0 SD |
11,791 | 0.85 |
| 344 | 46 CFR 308
WAR RISK INSURANCE
High signals: Paperwork share
+1.6 SD · Restriction density
+1.1 SD |
14,133 | 0.85 |
Score: the mean of six signals, in standard deviations (SD). Across the CFR, the top 641 of 6,402 ranked parts (10%) get a flag for review; this list shows 25. A flag is not a finding.
Statutes behind the most text
- 49 U.S.C. 106: 1,532,459 words in 82 parts (23.9% of this agency's text)
- 49 U.S.C. 322: 908,620 words in 46 parts (14.2% of this agency's text)
- 28 U.S.C. 2461: 895,563 words in 43 parts (14.0% of this agency's text)
- 49 U.S.C. 5101: 805,543 words in 15 parts (12.6% of this agency's text)
- 49 U.S.C. 20103: 499,060 words in 25 parts (7.8% of this agency's text)
- 49 U.S.C. 44701: 277,169 words in 2 parts (4.3% of this agency's text)
- 49 U.S.C. 20102: 216,422 words in 11 parts (3.4% of this agency's text)
- 49 U.S.C. 5103: 191,495 words in 5 parts (3.0% of this agency's text)
- 30 U.S.C. 185: 165,312 words in 3 parts (2.6% of this agency's text)
- 49 U.S.C. 44903: 149,067 words in 1 parts (2.3% of this agency's text)
From the authority notes. A citation is not proof that the statute requires the rule.
Largest parts
- 49 CFR 571: FEDERAL MOTOR VEHICLE SAFETY STANDARDS (502,835 words)
- 49 CFR 173: SHIPPERS—GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS (226,536 words)
- 49 CFR 178: SPECIFICATIONS FOR PACKAGINGS (161,960 words)
- 49 CFR 172: HAZARDOUS MATERIALS TABLE, SPECIAL PROVISIONS, HAZARDOUS MATERIALS COMMUNICATIONS, EMERGENCY RESPONSE INFORMATION, TRAINING REQUIREMENTS, AND SECURITY PLANS (160,084 words)
- 14 CFR 25: AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES (149,067 words)
- 14 CFR 121: OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS (143,177 words)
- 14 CFR 60: FLIGHT SIMULATION TRAINING DEVICE INITIAL AND CONTINUING QUALIFICATION AND USE (133,992 words)
- 14 CFR 91: GENERAL OPERATING AND FLIGHT RULES (106,797 words)
- 49 CFR 192: TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS (105,684 words)
- 14 CFR 61: CERTIFICATION: PILOTS, FLIGHT INSTRUCTORS, AND GROUND INSTRUCTORS (89,442 words)
Sub-agencies
- Federal Aviation Administration
- Federal Aviation Administration Commercial Space Transportation
- Federal Highway Administration
- Federal Motor Carrier Safety Administration
- Federal Railroad Administration
- Federal Transit Administration
- Great Lakes St. Lawrence Seaway Development Corporation
- Maritime Administration
- National Highway Traffic Safety Administration
- Office of Secretary (Aviation Proceedings)
- Office of Secretary of Transportation
- Pipeline and Hazardous Materials Safety Administration
Reading grade and sentence types are approximate. Simple rules label each sentence; the first match wins.