# Currie Associates, Inc — Hazardous Materials Safety Interpretation

**Citation:** 04-0032  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2004-04-05

04-0032 response to Currie Associates, Inc concerning 172.604.

## Document text

<<<PAGE 1>>>

U.S. Department
of Transportation
Special Programs
Research and
APR
5 2004
400 Seventh St., S.W.
Washington, D.C. 20590
Administration
Mr. John V. Currie
Currie Associates, Inc.
Ref. No. 04-0032
1118 Bay Road
Lake George, New York 12845-4618
Dear Mr. Currie:
This is in response to your February 18, 2004 letter regarding
the emergency response telephone number requirements under the
Specifically, you ask whether the emergency response telephone
Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180).
number may be in the form of "alpha characters" representing a
telephone number on the telephone dial or keypad of a telephone.
The answer is yes.
As specified in $ 172,604, a person offering
response telephone number, including the area code or
a hazardous material for transportation must provide an emergency
international access code, for use in the event of an emergency
involving the hazardous material.
use of "alpha characters" as a method of complying with this
The HMR do not prohibit the
requirement.
However, based on the concerns you rasied, we may
• Based on the done m
consider publishing a noțice of proposed rulemaking to address
this issue in the future.
questions, please do not hesitate to contact this office.
I hope this information is helpful. If you have additional
Sincerely,
Regulatory Review
Hattie I. Mitchell, Chief
Office of Hazardous Materials Standards
and Reinvention
§172.604
040032

<<<PAGE 2>>>

Betts
$172.604
Emergency Response Telephone
CURRIE ASSOCIATES, INC.
Number
THE GLOBAL COMPLIANCE PROFESSIONALS .
04-0032
Dr. Robert McGuire, Ph.D.
February 18, 2004
Associate Administrator
Research and Special Programs Administration
400 7* Street, SW DHM-1
Washington, DC 20590-0001
Dear Dr. McGuire:
I am submitting this request for consideration of an official interpretation of the
requirements applicable to 49 CFR, Part 172, Subpart G, §172.604 Emergency Response
telephone number.
On behalf of several of my clients and as a former emergency responder wę have a joint
concern regarding immediate access to the information that may be required to be
provided by the "person who is either knowledgeable of the hazardous material being
shipped and has comprehensive emergency response and incident mitigation information
for that material, or has immediate access to a person who possesses such knowledge and
information." Several places throughout the section and more particularly at §172.604(b),
the regulations specifically require a "number" and states "The telephone number
required by paragraph (a) of this section must be the number of the person offering the
accepting responsibility for, providing detailed information concerning a hazardous
hazardous material for transportation or the number of an organization capable of, and
material." (Emphasis added by underlining)
It has been brought to our attention thạt some shippers are using the "alpha characters"
representing a telephone number on the telephone dial or keypad of à telephone. It is
possible that in some instances the letters may form an acronym advertising an agency or
shipper company division that has accepted the responsibility for providing the
emergency response information.
In the past most wall or desk telephones had rotary dials with large numerals and equally
large letters, usually three letters representing each number, or were equipped with
keypads which also had large numerals and equally large letters, similarly configured.
However, please permit me to call to your attention that the introduction of wireless and
cellular phone service has increasingly focused on miniaturizing the hardware for
convenience in mobile use. Modern cellular phones are now so small that they may be
carried in a shirt pocket and some even include a computer keypad function that require a
1118 BAY ROAD * LAKE GEORGE, NEW YORK 12845-4618 * TEL: (518) 761-0668 FAX: (518) 792-7781
http://www.currieassociates.com Email: mail@currieassociates.com

<<<PAGE 3>>>

Page 2 of 2
make reading of the letters on the small buttons of a keypad extremely difficult under
stylus to push the tiny buttons. These modern telephones, due to the reduction in size,
good lighting conditions and virtually impossible in poor light.
Many emergency responders, including firefighters, police, and emergency medical
technicians are equipped with cellular telephones and rely on these phones for on-scene
communications. Requiring these responders to transpose letters into numbers to reach
materials release, under normal conditions such as night time incidents could result in
the emergency response contact and obtain critical information at the scene of hazardous
loss of valuable time. Under conditions usually associated with an accident scene, such as
not feel that these emergency responders should be encumbered in any way in obtaining
wearing "turn-out gear" and other distractions, the difficulty could be exacerbated. We do
the necessary information as quickly as possible in the emergency situation.
In the interest of transportation safety, we would therefore request an official written
clarification be issued as expeditiously as possible that in consideration of these factors,
regulations at §172.604 and accordingly §172.201(d).
would include a literal interpretation of the term telephone number within the text of the
Sincerely yours,
Softl une
John V. Currie
Currie Associates, Inc.

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2004/040032.pdf>
- Source ID: `phmsa`
- SHA-256: `3df14b65ce900ea910b124ac508df386960b6c1d2fa96a91c00443f3b70e248a`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T14:45:03.939Z
- Document slug: `phmsa-interpretation-04-0032`

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