[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR105.20]

[Page 9]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 105_HAZARDOUS MATERIALS PROGRAM DEFINITIONS AND GENERAL PROCEDURES
--Table of Contents
 
                      Subpart B_General Procedures
 
Sec. 105.20  Guidance and interpretations.

    (a) Hazardous materials regulations. You can obtain information and 
answers to your questions on compliance with the hazardous materials 
regulations (49 CFR parts 171 through 180) and interpretations of those 
regulations by contacting RSPA's Office of Hazardous Materials Safety as 
follows:
    (1) Call the Hazardous Materials Information Center at 1-800-467-
4922 (in Washington, DC, call 202-366-4488). The Center is staffed from 
9 a.m. through 5 p.m. Eastern time, Monday through Friday except Federal 
holidays. After hours, you can leave a recorded message and your call 
will be returned by the next business day.
    (2) E-mail the Hazardous Materials Information Center at 
infocntr@rspa.dot.gov.
    (3) Access the Office of Hazardous Materials Safety home page via 
the Internet at http://hazmat.dot.gov.
    (4) Send a letter, with your return address and a daytime telephone 
number, to: Office of Hazardous Materials Standards, Research and 
Special Programs Administration, Attn: DHM-10, U.S. Department of 
Transportation, 400 7th Street SW., Washington, DC 20590-0001.
    (b) Federal hazardous materials transportation law and preemption. 
You can obtain information and answers to your questions on Federal 
hazardous materials transportation law, 49 U.S.C. 5101 et seq., and 
Federal preemption of State, local, and Indian tribe hazardous material 
transportation requirements, by contacting RSPA's Office of the Chief 
Counsel as follows:
    (1) Call the office of the Chief Counsel at (202) 366-4400 from 9 
a.m. to 5 p.m. Eastern time, Monday through Friday except Federal 
holidays.
    (2) Access the Office of the Chief Counsel's home page via the 
Internet at http://rspa-atty.dot.gov.
    (3) Send a letter, with your return address and a daytime telephone 
number, to: Office of the Chief Counsel, Research and Special Programs 
Administration, Attn: DCC-10, U.S. Department of Transportation, 
Washington, DC 20590-0001.
    (4) Contact the Office of the Chief Counsel for a copy of 
applications for preemption determinations, waiver of preemption 
determinations, and inconsistency rulings received by RSPA before 
February 1, 1997.