Answer :
The Highway Transportation System is coordinated by the United States Department of Transportation. Its purpose is to have the roads be as safe as possible, getting people where they need to be as efficiently as possible.
I believe the answer is: A. the U.S. Department of Transportation
the U.S. Department of Transportation was created to ensure the safety and operation of the transportation system in united states. This agency was first created in 1967, and has around $750 million budget allocated from the government fund each year.