If you are talking of this subject, the source of the problem. Part of the story, the rate of growth more cars until finding the driver quality is not up to Thailand. From the original manufacturer to have a driver's license must be 20 years or older, but in current drops just 18 year old motorcycle permits children under 15 years old have a driving license. The major reason. Wait until the life of the driver in the car at the age of 20 years produced a large number of potential economic problems. For these reasons, so it is not uncommon nowadays, the number of motorists on the road, there will be a slight quality riders only.