Transportation officials in Georgia are considering building the United States' first truck-only highway to improve freight efficiency and road safety and reduce congestion.

The $US1.8billion proposal would see a two-lane highway, exclusively for trucks, run for 64 kilometres – from Atlanta to Macon, alongside an existing highway.

The idea is the Georgia Department of Transportation's response to a forecast doubling of truck traffic between the cities in the next 20 years.

The state government hopes to get some funding from the Trump Administration's huge infrastructure budget, but already has some of the budget from a fuel tax imposed three years ago specifically to fund transportation projects.

The proposed truck highway would not be tolled and Georgia believes the road would attract tech companies to test out autonomous trucks and truck platoons.

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