If you mean the "International E-road network", they're just called E-roads.
If you mean the highway system; it's called different in every country (language). The general word for those roads would be the British 'Motorway', or just 'Highway'.
Members of European Parliament or MEPs
it is the system that was introduced to the Caribbean to keep the going of slavery
British: 100 pence = 1 pound European: 100 cents = 1 euro
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Christopher Guyhard (Which is Called Ode to Joy)
The National Defense Highway System is usually called the Interstate Highway System or the Eisenhower Highway System.
An interstate highway is one that runs across the US, normally across several states (hence inter-state). The US Interstate Highway System is the system of federally-built roadways that began construction in the 1950s, originally as a way to improve the flow of essential military material.
interstate
Increased suburbanization is the development that resulted from the construction of the interstate highway system.
The interstate highway system was designed to be used as military runways.
Late 1950s under president Eisenhower. The full name of the system is "The National Defense and Interstate Highway System".
granted the federal government control over interstate commerce.
As of 2012, the US interstate highway system includes almost 50,000 miles.
Dwight Eisenhower was President of the US when the Interstate highway system was formed.
If they are in the same state, it is intrastate. If they are in separate states, it is called interstate. Since Brisbane and Sydney are in different states, the answer to your question is "interstate".
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The interstate highway system came about from lessons learned in WWII. The Germans had built the Autobahn system Every country in the world noticed how quick you could move men and equipment with this system even though the Germans had not been able to use their system effectively due to fuel shortages. When the war ended the cold war started, this really brought the need for this system to the attention of both European and American governments. Thus was built the interstate highway system