They regulates the economic aspect of air transportation.

(a)  

They establishes minimum safety standards for air carriers.

(a)  

They makes policies on maritime safety.

(a)  

They integrates and coordinates port planning, development control, and operations.

(a)  

They are the ones who administers, enforces, and monitors the compliance of the land transportation services to the established policies, laws, and regulations.

(a)  

They oversees the country's infrastructure, including roads and bridges.

(a)  

They are responsible for revenue collection through the Bureau of Internal Revenue and Bureau of Customs.

(a)  

They supervises both the LGUs and the Philippine National Police (PNP). The PNP ensures peace and order in the communities and safety of the general public.

(a)  

They regulates the entry and exit of foreign nationals under the Bureau of Immigration.

(a)