Extremely Hazardous Materials Transportation Security Act of 2005

Extremely Hazardous Materials Transportation Security Act of 2005 - Directs the Secretary of Homeland Security to issue regulations concerning the shipping of extremely hazardous materials that require: (1) physical security measures; (2) Federal, State, and local law enforcement authorities to be informed before such material is transported within, through, or near an area of concern; (3) the creation of response plans for shipments of extremely hazardous materials; (4) the use of currently available technologies and systems to ensure effective communication between transporters of extremely hazardous materials and all entities charged with responding to acts of terrorism involving shipments of such materials; (5) comprehensive training for all individuals involved in the shipping of such materials; and (6) the Secretary to determine whether transportation through or near an area of concern could be made by alternate routes at a lower security risk.

Subjects a person (other than an individual) who violates such a regulation to injunctive relief or a civil penalty of up to $100,000. Authorizes the Secretary to impose administrative penalties.

Sets forth whistleblower protections for persons involved in the shipment of extremely hazardous materials.

Requires the Secretary to report to Congress on the security of, and risk of a terrorist attack on, such shipments.

Defines "extremely hazardous material" as material that is toxic by inhalation, extremely flammable, highly explosive, or otherwise designated by the Secretary.