Thais drivers are pathetic. Other places I have seen are, Venezuela, UAE, India, Vietnam. These places are the worst I have experience driving. Your experience might be different.
Zebra crossing means nothing to them.
In Canada, if a person put a foot on it you must bring your vehicle to a stop, otherwise, if spotted by a cop, you will be in front of a judge, most likely, your license gone for a few months, or for good.
Worldwide, approaching one from far, I slow down, far out, as I know pedestrians has the right away. In Thailand if I see a pedestrian\s looking to cross one, I look in the rear and side mirrors to see who is coming and put on my hazard lights because, I know a Thai will kill a person trying to cross or hit me in the rear. Even if they see the hazard lights they still pass me, almost killing the person\s, but the people here, bow to me, look before passing my vehicle. Some Thais behind me blow their horns, but I do not care.