Final answer:
The exact position of the Secretary of Transportation in the presidential line of succession is not specified in the list provided, but they follow after Cabinet secretaries of earlier established departments like the Department of Health and Human Services.
Step-by-step explanation:
The Secretary of Transportation is not specified in the provided list, which only gives the order up to the 8th position filled by the Attorney General. To determine the exact position of the Secretary of Transportation in the presidential line of succession, we would have to look at the full list as established by the Presidential Succession Act of 1947 and subsequent amendments. Cabinet secretaries are listed in the order that their departments were created. Since the Department of Transportation was established after the Department of Health and Human Services (which followed the Attorney General in succession), the Secretary of Transportation would follow after. The order of succession for Cabinet members usually proceeds from the Secretary of State to the Secretary of the Treasury, Secretary of Defense, and so on through the cabinet positions based on the date of the establishment of their respective departments.