PEOPLE going back to their hometowns, a process known as mudik, and the resulting traffic congestion happen every year. Without proper management, the two could combine to create a disaster. In 2016, 12 people died at the Brebes Toll Gate, Central Java. The 20-kilometer traffic jams that lasted for three consecutive days led to people becoming exhausted and going hungry.

Every year, mudik leads to the same problems: the number of people going ho