How to Use the HMR
5
EXERCISE 2: LOCATING REFERENCE NUMBERS
CFR Reference Numbers. Bold numbers referring to sections are at the top outside corners
of each page of the HMR. These reference numbers have the same location and purpose as
dictionary locator words at the top of each page in a dictionary. That is, the number on the
top left is the CFR reference number that begins that page. The number on the top right of
the facing page is the reference number for the last CFR reference number on that page.
It is important to use these reference numbers rather than page numbers to locate HMR
information. The page numbers in 49 CFR are always changing because of revisions,
additions, deletions, and the annual reprinting of the CFR.
Turn to Subchapter C, the beginning of the HMR.
Subchapter C – Hazardous Materials Regulations
Part 171 – GENERAL INFORMATION, REGULATIONS, AND DEFINITIONS.
Use the reference numbers at the top of the HMR. Notice that Part 171 begins with a table
of contents. The table of contents lists headings within Part 171 by section numbers, not
page numbers.
Scan the sections of Part 171. Notice the Part and Section numbers in bold at the top of
each page; these numbers refer to the section that begins or ends the page.
§ 171.1 49 CFR Ch. 1 (10-01 Edition)
Part 171 – GENERAL
INFORMATION, REGULATIONS,
AND DEFINITIONS
Sec.
171.1 Purpose and scope.
171.2 General requirements.
171.3 Hazardous Waste.
171.4 Marine pollutants.
171.6 Control numbers under the
Paperwork Reduction Act.
171.7 Reference Material.
171.8 Definitions and Abbreviations.
171.9 Rules of construction.
171.10 Units of measure.
171.11 Use of ICAO Technical
Instructions.
171.12 Import and export shipments.
171.12a Canadian shipments
and packagings.
(4) The use of terms and symbols prescribed
in this subchapter for the marking, labeling,
placarding and description of hazardous ma-
terials and packagings used in their trans-
port.
(b) Any person who, under contract with
any department, agency, or instrumentality
of the executive, legislative, or judicial branch
of the Federal Governments, transports, or
causes to be transported or shipped, a hazard-
ous material or manufactures, fabricates,
marks, maintains, reconditions, repairs, or
tests a package or container which is repre-
sented, marked, certified, or sold by such per-
son as qualified for use in the transportation
of a hazardous material shall be subject to
and comply with all provisions of the Federal
hazardous materials transportation law, all
orders and regulations issued thereunder,
and all other substantive and procedural re-
Subchapter C - Hazardous Materials Regulations