The National Police Agency on Thursday unveiled a draft bill that would allow vehicles with a high level of autonomous features to run on public roads, with an eye toward implementing the legislation in the first half of 2020.

The bill to revise the nation's road traffic law would enable travel for what the government classifies as level 3 autonomous vehicles. Such vehicles can allow drivers to shift their attention elsewhere and let the system drive, except for during emergencies and system glitches that would require them to take back control.

In the initial stage, the government may only allow the use of level 3 self-driving technology during highway traffic jams.