1. A highway or major road with little to no traffic; a road that is devoid of vehicles
We drove down an empty highway at midnight without seeing another car.
Dirigimos por uma rodovia vazia à meia-noite sem ver outro carro.
2. Figuratively, a situation or opportunity that is unoccupied or available
After the pandemic, the roads became empty highways once again.
Após a pandemia, as estradas se tornaram rodovias vazias novamente.