[DexOnenlyCymn]

I have been ran off the road hundreds of times, both with my car and motorcycle, and if not alert I would be dead now.
It is not because a Thai has changed because he got in a car or because he is aggressive.
For the first thing, He has no idea about Traffic laws as most likely he has backhanded some cash to the officer and that is how he got his license and knows nothing about the traffic laws, and if he does understand some of them, they mean nothing to him as he is better than you anyway and you should give him right of way, thats why here flashing of lights means I have right of way and intend to use it, if you pull in front of me I will kill you.

Where in most country's it means that I will give you right of way so go ahead and make your move, I will look out for you.
Besides that, he might not even see you as you are not worthy and come in below his radar if he makes more than the average Thai and is a class above most.
And the main thing of all is the Police do not pay any attention to law enforcement so no Thai has to worry about it either, They never learned the laws and no need to start now, They were never taught to drive and there is no one to teach or monitor their skills, so you are on your own when on the hyways here.
But as has been stated earlier, you never know what they are going to do as logical thought is not a Thai thing so anything is possible so just watch out.