49 CFR 172 Special Provisions

Special provisions contain packaging provisions, prohibitions, exceptions from requirements for particular quantities or forms of materials and requirements or prohibitions applicable to specific modes of transportation.

Numeric Codes

These provisions are multi-modal and apply to bulk and non-bulk packagings.

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A-Codes

These provisions apply only to transportation by aircraft.

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B-Codes

These provisions apply only to bulk packagings. Except as otherwise provided in this subchapter, these special provisions do not apply to UN portable tanks or IBCs.

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IB-Codes and IP-Codes

These provisions apply only to transportation in IBCs and Large Packagings.

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N-Codes

These provisions apply only to non-bulk packagings.

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R-Codes

These provisions apply only to transportation by rail.

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T-Codes

These provisions apply to the transportation of hazardous materials in UN portable tanks.

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TP-Codes

These provisions apply to the transportation of hazardous materials in IM and UN Specification portable tanks.

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W-Codes

These provisions apply only to transportation by water.

To The Codes

Most Popular Special Provisions Current Month

#	Special Provision
1.	A3 (A-Codes)
2.	A51 (A-Codes)
3.	144 (Numeric Codes)
4.	IB2 (IB-Codes and IP-Codes)
5.	149 (Numeric Codes)
6.	47 (Numeric Codes)
7.	N82 (N-Codes)
8.	B1 (B-Codes)
9.	IB8 (IB-Codes and IP-Codes)
10.	A9 (A-Codes)
11.	136 (Numeric Codes)
12.	1 (Numeric Codes)
13.	TP2 (TP-Codes)
14.	IB3 (IB-Codes and IP-Codes)
15.	238 (Numeric Codes)
16.	A1 (A-Codes)
17.	188 (Numeric Codes)
18.	A189 (A-Codes)
19.	148 (Numeric Codes)
20.	TP1 (TP-Codes)