South Korea has outlined an ambitious plan to build in the next three years a network of smart expressways, adapted to electric vehicles and self-driving cars, to limit traffic congestions and polluting emissions.

The government will invest $US33.1 billion ($A43.8 billion) and plans to raise another $US31.3 billion ($A41.5 billion) through private sector investment to finance the plan until 2020, the South Korean transport ministry said. The new network that add to other measures by the South Korean government, including tax cuts to…