P.R. Laws tit. 3A, § II
The Department of Transportation and Public Works, in addition to its already assigned functions, shall be the central organization for the planning, promotion and coordination of the government activity in the field of transportation; it shall formulate the general policy on land, air and maritime transportation of the Commonwealth, and once they have been adopted by the Governor and/or the Legislature it shall have under its charge its implementation; it shall make recommendations to the Governor and to the Legislature as to programs, projects or any other measure in order to satisfy the needs of the country in regard to transportation services and facilities; it shall plan, and promote the development of an efficient and safe integrated transportation system which shall favor the development of the economy, general welfare and safety in its enjoyment; it shall constantly evaluate and study transportation problems and the effectiveness of programs and projects which shall be carried out in order to solve them; it shall have under its charge the administration of government transportation programs.