New York Codes, Rules and Regulations
Title 21 - Miscellaneous
Chapter XXIV - The Port Authority Of New York And New Jersey
Subchapter A - Vehicular Crossings
Article 2 - Transportation of Hazardous Material
Part 1211 - Regulations Applying To Lincoln Tunnel, Holland Tunnel, George Washington Bridge Lower Level And George Washington Bridge Expressway
Compressed Gases-Tunnel, G.W.B. Lower Level and G.W.B. Expressway Restrictions
Section 1211.26 - Any article referenced to this section

(a) Any article listed in section 1211.150 and referenced to this section may or may not be a compressed gas. When it is not identified by the prescribed D.O.T. caution label for dangerous articles and is known not to meet the description of a dangerous article, the article is allowed passage provided the shipping order, bill of lading, or other shipping paper shows the following certification:

"This shipment conforms to Port Authority of New York and New Jersey rules for the transportation of explosives and other dangerous articles via its tunnels, the G.W.B. Lower Level and G.W.B. Expressway."