I've rented cars many times in Thailand, and a few times in Bali. The Thai BIB could learn a couple tricks from the Indonesian police in Bali.
I was driving in Kuta Beach a few years back, crawling along in traffic, and a cop jumped off the curb and stopped me. He asked me why I didn't stop for the traffic light. The light was mounted on a pole about 10' high at the curb, and his partner would stand under the traffic light, and pull a tree branch down over the light, and wait for a tourist to "not see" the traffic light. Sure enough, the following day, I passed the same area, and the same cop was standing there with the tree branch pulled down, waiting for the light to turn red, so he could let the branch go, and catch another unsuspecting tourist.