[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: 49CFR179.22]

[Page 1023]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 179_SPECIFICATIONS FOR TANK CARS--Table of Contents
 
                  Subpart B_General Design Requirements
 
Sec. 179.22  Marking.

    In addition to any other marking requirement in this subchapter, the 
following marking requirements apply:
    (a) Each tank car must be marked according to the requirements in 
appendix C of the AAR Specifications for Tank Cars (IBR, see Sec. 171.7 
of this subchapter).
    (b) Each tank car that requires a tank-head puncture-resistance 
system must have the letter ``S'' substituted for the letter ``A'' in 
the specification marking.
    (c) Each tank car that requires a tank-head puncture-resistance 
system, a thermal protection system, and a metal jacket must have the 
letter ``J'' substituted for the letter ``A'' or ``S'' in the 
specification marking.
    (d) Each tank car that requires a tank-head puncture-resistance 
system, a thermal protection system, and no metal jacket must have the 
letter ``T'' substituted for the letter ``A'' or ``S'' in the 
specification marking.

[Amdt. 179-50, 60 FR 49077, Sept. 21, 1995, as amended by Amdt. 179-50, 
61 FR 33256, June 26, 1996; 68 FR 75759, Dec. 31, 2003]

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