1. A. The following classes of hazardous materials are defined in the United States Department of Transportation Regulations, 49 CFR 173, which is incorporated by reference:

   Name of Class or Division	Class Number	Division Number (if any)	49 CFR Reference for Definitions
   (1) Forbidden materials	None
   (2) Forbidden explosives	None
   (3) Explosives (with a mass explosion hazard) (old class A)	1	1.1	173.50
   (4) Explosives (with a projection hazard) (old class B)	1	1.2	173.50
   (5) Explosives (with predominately a fire hazard) (old class B)	1	1.3	173.50
   (6) Explosives (with no significant blast hazard) (old class C)	1	1.4	173.50
   (7) Very insensitive explosives; blasting agents	1	1.5	173.50
   (8) Extremely insensitive detonating substances	1	1.6	173.50
   (9) Flammable gas	2	2.1	173.115
   (10) Nonflammable compressed gas	2	2.2	173.115
   (11) Poisonous gas	2	2.3	173.115
   (12) Flammable and combustible liquid	3		173.120
   (13) Flammable solid	4	4.1	173.124
   (14) Spontaneously combustible material	4	4.2	173.124
   (15) Dangerous when wet material	4	4.3	173.124
   (16) Oxidizer	5	5.1	173.128
   (17) Organic peroxide	5	5.2	173.128
   (18) Poisonous materials	6	6.1	173.132
   (19) Infectious substance (Etiologic agent)	6	6.2	173.134
   (20) Radioactive material	7		173.403
   (21) Corrosive material	8		173.136
   (22) Miscellaneous hazardous material	9		173.140
   (23) Other regulated material: ORM-D	None		173.144

2. B. Terms Defined.

   1. (1) “Authority property” means the following facilities and their approaches:

      1. (a) Baltimore Harbor Tunnel (I-895);
      2. (b) William Preston Lane, Jr. Memorial Bridge (U.S. 50/301);
      3. (c) Harry W. Nice Memorial Bridge (U.S. Route 301);
      4. (d) Thomas J. Hatem Memorial Bridge (U.S. Route 40);
      5. (e) Francis Scott Key Bridge (MD 695);
      6. (f) John F. Kennedy Memorial Highway (I-95);
      7. (g) The I-95 Fort McHenry Tunnel (I-95); and
      8. (h) The InterCounty Connector (MD 200).
   2. (2) "Container" means a package or receptacle used to contain hazardous materials for transportation, including a box, bottle, can, drum, barrel, cylinder, carboy, or other shipping package, other than a tank vehicle or bulk packaging, used for the transportation of hazardous materials.
   3. (3) “Flash point” means the minimum temperature at which a substance gives off flammable vapors which in contact with spark or flame will ignite.
   4. (4) “Gross weight” means the total weight of a container and its contents.
   5. (5) “Hazardous material” means a substance or material, including a hazardous substance, which has been determined by the Secretary of Transportation for the United States Department of Transportation (U.S.D.O.T.) to be capable of posing an unreasonable risk to health, safety, and property when transported in commerce and which has been so designated.
   6. (6) “Hazardous substance” means a material, including its mixtures and solutions, that is listed in the Appendix to 49 CFR §172.101, which is incorporated by reference. This definition does not apply to petroleum products that are lubricants or fuels.
   7. (7) “N.O.S.” means not otherwise specified.
   8. (8) “Net weight” means the weight of the contents of a container only.
   9. (9) “Shipping paper” means a manifest, memorandum receipt, bill of lading, shipping order, or other document describing material to be transported.
   10. (10) “Tank vehicle” means any vehicle with a cargo tank, portable tank, bulk pyramided cylinders, or tube trailer used for the transportation of liquids or gases.

Authority: Transportation Article, §§4-205, 21-1403, and 21-1411, Annotated Code of Maryland

Effective date: January 25, 1980 (7:2 Md. R. 116)

Regulation .20B amended effective September 28, 1981 (8:19 Md. R. 1566)

Regulations .01—.20 repealed and new Regulations .01—.06 adopted effective March 24, 1986 (13:6 Md. R. 683)

Regulation .01 amended effective February 18, 1991 (18:3 Md. R. 306); June 7, 1993 (20:11 Md. R. 913)

Regulation .01B amended effective August 4, 2014 (41:15 Md. R. 891)

Regulation 02 amended effective June 7, 1993 (20:11 Md. R. 913)

Regulation .02B, C amended effective August 4, 2014 (41:15 Md. R. 891)

Regulation .02C amended effective February 18, 1991 (18:3 Md. R. 306)

Regulation .03 repealed and new Regulation .03 adopted effective June 7, 1993 (20:11 Md. R. 913)

Regulation 04 amended effective June 7, 1993 (20:11 Md. R. 913)

Regulation .04D, G amended effective February 18, 1991 (18:3 Md. R. 306)

Regulation .04H, I adopted effective February 18, 1991 (18:3 Md. R. 306)

Regulation 05 amended effective June 7, 1993 (20:11 Md. R. 913)

Regulation .05A amended effective February 18, 1991 (18:3 Md. R. 306)

Regulation .05B amended effective August 4, 2014 (41:15 Md. R. 891)

Regulation .06A amended effective February 18, 1991 (18:3 Md. R. 306); August 4, 2014 (41:15 Md. R. 891)