cabotage
noun [ U ]
uk/ˈkæbətɪdʒ/ us/ˈkæbətɑʒ/ COMMERCE, TRANSPORT
the transport of goods or people within a country's borders:
They argued that cabotage rights should be granted to European carriers within the US.
LAW, TRANSPORT
a set of laws made by a government of a country to prevent or limit the transport of goods or people within the country's borders by foreign vehicles, ships, or aircraft:
As in many other countries, cabotage policies restrict domestic air transport services to US carriers.