1. US DEPARTMENT OF
TRANSPORTATION (DOT)
49 CFR
Pipelineand
Hazardous Materials
Safety Administration
U.S. Department
of Transportation
Pipeline and
Hazardous Materials
Safety Administration

2. CONTENTS
S.No: Description
1 About DOT & CFR
2 Why CFR
3
4
Territorial Applicability
Hazard Classes
5 Structure of 49 CFR
6 Volume 2 (Part 100 to 185)
Pipeline and Hazardous Material and Safety
Administration.
7 Volume 5 (Part 300 to 399)
Federal Motor Carrier Safety
Administration (DOT)

3. ABOUT DOT/CFR
DOT:
The US Department of Transportation establishes design and construction standards for the US
and Interstate Highways and manages the Federal highway funding programs. The Department
includes agencies like the Federal Aviation Administration and the National Highway Safety
Administration that regulate the safety of various forms of transportation, as well as investigate
serious transportation incidents. Through the Pipeline and Hazardous Materials Safety
Administration, the Department regulates natural gas and petroleum pipe lines and the
transportation of hazardous materials by rail, highway, air and water, and harmonizes those
regulations with international requirements.
CFR:
The Code of Federal Regulations is a codification of the general and permanent
rules published in the Federal Register by the Executive departments and agencies
of the Federal Government. The Code is divided into 50 titles which represent
broad areas subject to Federal regulation. Each title is divided into chapters
which usually bear the name of the issuing agency. Each chapter is further sub divided
into parts covering specific regulatory areas.
Tiltle 49-Transportation:
The Code of Federal Regulations, Title 49, governs the domestic transportation of hazardous
materials for all modes of transport to, from, and within the United States.
Title 49 is composed of nine volumes. The volumes containing Parts 100-185 for the
transportation of hazardous materials are overseen by the Pipeline and Hazardous Materials
Safety Administration, which is part of the U.S. Department of Transportation.
WHY 49 CFR
The 49 CFR addresses key protocols for preparing, shipping, and handling dangerous goods.
Any person handling dangerous goods should read, understand, and comply with all elements of
the 49 CFR. Some of the highlights include:

4.  The description of hazardous materials by class, including explosives, gases, flammable
and combustible liquids and solids, poisons, radioactive materials, and corrosive agents.
 The amount of hazardous materials permitted in certain primary containers as well as the
total volume per shipped package.
 The types of packages and packaging required to safely transport hazardous materials.
 Testing requirements needed to reach specific performance standards.
 The documentation required when shipping hazardous materials.
 The markings and labels required on packaging and the placards required by the carrier.
 Training and safety plan requirements.
TARRITORIAL APPLICABILITY
DOT 49 CFR is applicable to, from, and within the United States. Which are stated as follow:
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
HAZARD CLASSES
Class 1: Explosives

5. Class 2: Gases
Class 3: Flammable Liquids/Vapors
Class 4: Flammable Solids
Class 5: Oxidizing Substances/Organic Peroxides
Class 6: Toxic and Infectious Substances
Class 7: Radioactive Material

6. Class 8: Corrosives
Class 9: Miscellaneous Dangerous Goods
STRUCTURE OF 49 CFR (DOT)
Title 49—TRANSPORTATION is composed of nine volumes. The parts in these volumes
are arranged in the following order:
Volume 1 ( Parts 1–99): contains current regulations issued under subtitle A—Office of the
Secretary of Transportation.
Volume 2 ( Parts 100–185) & Volume 3 (Part 186-199): contain the current regulations
issued under chapter I—Pipeline and Hazardous Materials Safety Administration
(DOT).
Volume 4 (Parts 200–299): contains the current regulations issued under chapter II—Federal
Railroad Administration (DOT).
Volume 5 (Parts 300–399): contains the current regulations issued under chapter III—Federal
Motor Carrier Safety Administration (DOT).
Volume 6 (Parts 400–599): contains the current regulations issued under chapter IV—Coast
Guard (DHS), chapter V—National Highway Traffic Safety Administration (DOT).
Volume 7 (Parts 600–999): contains the current regulations issued under chapter VI—Federal
Transit Administration (DOT), chapter VII—National Railroad Passenger Corporation
(AMTRAK), and chapter VIII—National Transportation Safety Board.
Volume 8 (Parts 1000–1199): contains the current regulations issued
under chapter X—Surface Transportation Board.

7. Volume 9 (Parts 1200 to end): contains the current regulations issued under chapter X—Surface
Transportation Board, chapter XI—Research and Innovative Technology Administration, and
chapter XII—Transportation Security Administration, Department of Transportation.
VOLUME 2 (Part 100 to 185)
PIPELINE AND HAZARDOUS MATERIAL AND SAFETY
ADMINISTRATION
SUBCHAPTER A — HAZARDOUS MATERIALS AND OIL TRANSPORTATION
Part 105 - Hazardous Materials Program definitions and general procedures.
Part 106 – Rulemaking procedures.
Part 107 - Hazardous materials program procedures.
Part 110 - Hazardous materials public sector training and planning grants.
SUBCHAPTER B — OIL TRANSPORTATION
Part 130 - Oil spill prevention and response plans.
SUBCHAPTER C—HAZARDOUS MATERIALS REGULATIONS
Part 171 - General information, regulations, and definitions.
Part 172 - Hazardous materials table, special provisions, hazardous materials
communications, emergency response information, and training requirements
Subpart A—General.
Purpose and scope: This part lists and classifies those materials which the Department has
designated as hazardous materials for purposes of transportation and prescribes the requirements
for shipping papers, package marking, labeling, and transport vehicle placarding applicable to
the shipment and transportation of those hazardous materials.
Subpart B—Table of Hazardous Materials and Special Provisions.
Purpose: The Hazardous Materials Table (Table) in this section designates the materials listed
therein as hazardous materials for the purpose of transportation of those materials. For each
listed material, the Table identifies the hazard class or specifies that the material is forbidden in
transportation, and gives the proper shipping name or directs the user to the preferred proper
shipping name. In addition, the Table specifies or references requirements in this subchapter

8. pertaining to labeling, packaging, and quantity limits aboard aircraft and stowage of hazardous
materials aboard vessels.
Subpart C—Shipping Papers.
Applicability: Description of hazardous materials required. Except as otherwise provided in this
subpart, each person who offers a hazardous material for transportation shall describe the
hazardous material on the shipping paper in the manner required by this subpart.
Subpart D—Marking
Applicability: (a) Each person who offers a hazardous material for transportation shall mark
each package, freight container, and transport vehicle containing the hazardous material in the
manner required by this subpart.
(b) When assigned the function by this subpart, each carrier that transports a hazardous material
shall mark each package, freight container, and transport vehicle containing the hazardous
material in the manner required by this subpart.
Subpart E—Labeling.
Applicability: each person who offers for transportation or transports a hazardous material in
any of the following packages or containment devices, shall label the package or containment
device with labels specified for the material in the Hazardous table and in this subpart.
Subpart F—Placarding.
Applicability: Each person who offers for transportation or transports any hazardous material
subject to this subchapter shall comply with the applicable placarding requirements of this
subpart.
Subpart G—Emergency Response Information.
Scope: This subpart prescribes requirements for providing and maintaining emergency response
information during transportation and at facilities where hazardous materials are loaded for
transportation, stored incidental to transportation or otherwise handled during any phase of
transportation.
Subpart H—Training.
Purpose: This subpart prescribes requirements for training hazmat employees.
Scope: Training as used in this subpart means a systematic program that ensures a hazmat
employee has familiarity with the general provisions of this subchapter, is able to recognize

9. and identify hazardous materials, has knowledge of specific requirements of this subchapter
applicable to functions performed by the employee, and has knowledge of emergency response
information, self-protection measures and accident prevention methods and procedures.
PART 173—SHIPPERS—GENERAL REQUIREMENTS FOR SHIPMENTS AND
PACKAGINGS
Subpart A—General.
Purpose and scope: (a) This part includes:
(1) Definitions of hazardous materials for transportation purposes.
(2) Requirements to be observed in preparing hazardous materials for shipment by air, highway,
rail, or water, or any combination thereof; and
(3) Inspection, testing, and retesting responsibilities for persons who retest, recondition,
maintain, repair and rebuild containers used or intended for use in the transportation of
hazardous materials.
(b) A shipment of hazardous materials that is not prepared in accordance with this subchapter
may not be offered for transportation by air, highway, rail, or water. It is the responsibility of
each hazmat employer subject to the requirements of this subchapter to ensure that each hazmat
employee is trained in accordance with the requirements prescribed in this subchapter. It is the
duty of each person who offers hazardous materials for transportation to instruct each of his
officers, agents, and employees having any responsibility for preparing hazardous materials for
shipment as to applicable regulations in this subchapter.
(c) In general, the Hazardous Materials Regulations (HMR) contained in this subchapter are
based on the UN Recommendations and are consistent with international regulations issued by
the International Civil Aviation Organization (ICAO Technical Instructions) and the
International Maritime Organization (IMDG Code). However, the HMR are not consistent in all
respects with the UN Recommendations, the ICAO Technical Instructions or the IMDG Code,
and compliance with the HMR will not guarantee acceptance by regulatory bodies outside of the
United States.

10. PART 174—CARRIAGE BY RAIL
Purpose and scope: This part prescribes requirements in addition to those contained in parts
171, 172, 173, and 179 of this subchapter, to be observed with respect to the transportation of
hazardous materials in or on rail cars.
PART 175—CARRIAGE BY AIRCRAFT
Purpose and scope: This part prescribes requirements that apply to the transportation of
hazardous materials in commerce aboard (including attached to or suspended from) aircraft. The
requirements in this part are in addition to other requirements contained in parts 171, 172, 173,
178, and 180 of this subchapter.
PART 176—CARRIAGE BY VESSEL
Purpose and scope: This part prescribes requirements in addition to those contained in parts
171, 172, and 173 of this subchapter to be observed with respect to the transportation
of hazardous materials by vessel.
Subpart I—Detailed Requirements for Class 3 (Flammable) and Combustible Liquid Materials.
This Subpart covers:
1. General stowage requirements.
2. Fire protection requirements.
3. Use of hand flashlights.
4. Smoking or open flame and posting of warning signs.
5. Combustible liquids in portable tanks.
Subpart N—Detailed Requirements for Class 8 (Corrosive Materials) Materials.
This Subpart covers:
1. General stowage requirements.
2. On deck stowage.
PART 177—CARRIAGE BY PUBLIC HIGHWAY
Purpose and scope: This part prescribes requirements, in addition to those contained in parts
171, 172, 173, 178 and 180 of this subchapter, that are applicable to the acceptance and
transportation of hazardous materials by private, common, or contract carriers by motor vehicle.
Responsibility for compliance: Unless this subchapter specifically provides that another person
shall perform a particular duty, each carrier, including a connecting carrier, shall perform the

11. duties specified and comply with all applicable requirements in this part and shall ensure its
hazmat employees receive training in relation thereto.
Responsibility for training: A carrier may not transport a hazardous material by motor vehicle
unless each of its hazmat employees involved in that transportation is trained as required by this
part and subpart H of part 172 of this subchapter.
No unnecessary delay in movement of shipments: All shipments of hazardous materials must
be transported without unnecessary delay, from and including the time of commencement of the
loading of the hazardous material until its final unloading at destination.
PART 178—SPECIFICATIONS FOR PACKAGINGS
Purpose and scope: This part prescribes the manufacturing and testing specifications for
packaging and containers used for the transportation of hazardous materials in commerce.
Subpart H—Specifications for Portable Tanks
General requirements: (a) Tanks must be of fusion welded construction, cylindrical in shape
with seamless heads concave to the pressure. Tank shells may be of seamless construction.
(b) Tanks must be designed, constructed, certified, and stamped in accordance with Section VIII
of the ASME Code (IBR, see § 171.7 of this subchapter).
(c) Tanks including all permanent attachments must be postweld heat treated as a unit.
(d) Requirements concerning types of valves, retesting, and qualification of portable tanks
contained in §§ 173.32 and 173.315 of this chapter must be observed.
This subpart also covers:
Material, Expansion domes, Closures for manholes and domes, Bottom discharge outlets,
Loading and unloading accessories, Protection of valves and accessories, Safety devices,
Compartments, Lining, Tank mountings, Pressure test, Repair of tanks, Marking, Report.
VOLUME 5 (Part 300 to 399)
FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION
(DOT)
SUBCHAPTER A — GENERAL REGULATIONS (Parts 300 to 325)
SUBCHAPTER B — FEDERAL MOTOR CARRIER SAFETY REGULATIONS (Parts 350 to
399)
PART 393 — Parts and accessories necessary for safe operation

12. Subpart A: General
Scope: The rules in this part establish minimum standards for commercial motor vehicles. Only
motor vehicles and combinations of motor vehicles which meet the definition of a commercial
motor vehicle are subject to the requirements of this part. All requirements that refer to motor
vehicles with a GVWR below 4,536 kg (10,001 pounds) are applicable only when the motor
vehicle or combination of motor vehicles meets the definition of a commercial motor vehicle.
Every motor carrier and its employees must be knowledgeable of and comply with the
requirements and specifications of this part.
Subpart B — Lamps, Reflective Devices, and Electrical Wiring.
 Lamps operable, prohibition of obstructions of lamps and reflectors.
 Lamps and reflective devices.
 Retroreflective sheeting and reflex reflectors, requirements for semitrailers and trailers
manufactured before December 1, 1993.
 Lamps and reflectors—combinations in driveaway-towaway operation.
 Hazard warning signals.
 Combination of lighting devices and reflectors.
 Power supply for lamps.
 Requirements for head lamps, auxiliary driving lamps and front fog lamps.
 Requirements for lamps other than head lamps.
 Requirements for reflectors.
 Wiring systems.
 Battery installation.
Subpart C — Brakes
 Required brake systems.
 Parking brake system.
 Brakes required on all wheels.
 Breakaway and emergency braking.
 Front brake lines, protection.
 Brake tubing and hoses; hose assemblies and end fittings.
 Brake actuators, slack adjusters, linings/pads and drums/rotors.
 Brakes to be operative.
 Control valves for brakes.
 Warning signals, air pressure and vacuum gauges.
 Brake performance.
 Automatic brake adjusters and brake adjustment indicators.
 Antilock brake systems.

13. Subpart D — Glazing and Window Construction.
 Glazing in specified openings.
 Truck and truck tractor window construction.
Subpart E — Fuel Systems
 All fuel systems.
 Liquid fuel tanks.
 Compressed natural gas fuel containers.
 Liquefied petroleum gas systems.
Subpart F — Coupling Devices and Towing Methods
 Coupling devices and towing methods, except for driveaway-towaway operations.
 Coupling devices and towing methods, driveaway-towaway operations.
Subpart G — Miscellaneous Parts and Accessories
 Tires.
 Sleeper berths.
 Heaters.
 Windshield wiping and washing systems.
 Windshield defrosting and defogging systems.
 Rear-vision mirrors.
 Horn.
 Speedometer.
 Exhaust systems.
 Floors.
 Rear impact guards and rear end protection.
 Warning flags on projecting loads.
 Seats, seat belt assemblies, and seat belt assembly anchorages.
 Interior noise levels in power units.
Subpart H — Emergency Equipment
 Emergency equipment on all power units.
Subpart I — Protection Against Shifting and Falling Cargo.
 Which types of commercial motor vehicles are subject to the cargo securement standards
of this subpart, and what general requirements apply?
 What are the minimum performance criteria for cargo securement devices and systems?
 What standards must cargo securement devices and systems meet in order to satisfy the
requirements of this subpart?
 What are the general requirements for securing articles of cargo?
 How is the working load limit of a tiedown, or the load restraining value of a friction mat,
determined?
 What else do I have to do to determine the minimum number of tiedowns?
 Must a tiedown be adjustable?

14.  What are the requirements for front end structures used as part of a cargo securement
system?
Subpart J — Frames, Cab and Body Components, Wheels, Steering, and Suspension Systems.
 Frames.
 Cab and body components.
 Wheels.
 Steering wheel systems.