Md. Code, Environment § 7-252

(a) Each controlled hazardous substance hauler:

(1) Shall maintain a bond or other security that the Department considers sufficient to indemnify this State for abatement of any pollution that may result from the improper transportation of a controlled hazardous substance;

(2) Shall pay an annual vehicle certificate fee set by the Department but not more than $50;

(3) When transporting any controlled hazardous substance, shall carry the manifest and the vehicle certificate in the cab of the controlled hazardous substance vehicle;

(4) May not transport a controlled hazardous substance unless the controlled hazardous substance is labeled properly and in secure containers in accordance with the rules and regulations of the Department that apply to that particular controlled hazardous substance;

(5) On the request of any police officer, shall stop the controlled hazardous substance vehicle and display to the police officer all required documentation and allow inspection and sampling of the controlled hazardous substance to determine if there is a violation of:

(i) The provisions of the vehicle certificate; or

(ii) Any federal or state law;

(6) Except under the supervision of the Department during an emergency, may not remove the controlled hazardous substance from the controlled hazardous substance vehicle, or treat, store for any period of time, or mix any controlled hazardous substance except in a controlled hazardous substance facility; and

(7) Shall report periodically, on a form required by the Department, the following information about shipments of controlled hazardous substances:

(i) The source of the controlled hazardous substance;

(ii) The nature of the controlled hazardous substance; and

(iii) The disposal destination.

(b) Each controlled hazardous substance vehicle driver, when transporting any controlled hazardous substance, shall comply with subsection (a)(3), (4), (5), and (6) of this section and all applicable State rules and regulations.