As a driving instructor in Canada a man that drives when I'm in Chiang Rai province, I can conclude that most drivers from everywhere are terrible drivers when in other countries and some even in their own homeland. Driving on the left side of the road is something I'm not accustomed to but I only drive in the day light hours with my Thai wife by my side. I stick to the speed limit and use my signals always even though I'm the beginning I was always activating the wipers. Many drivers will pass me on hills and curves with double solid lines. My point is as a driving instructor I'm not claiming to be perfect but I've trained many foreigners and the MO is always the same, if they drove in their homeland they need to still do training in Canada (Class1) unless they came from USA. They still drive like they're home. I guarantee to foreigners coming to Thailand are guilty of the same.
Funny story to end my rant. One day I just got into the office for lunch. A lady walked in asking if we are a driving school of course I said yes and asked her if she was looking to obtain her Class 1 license. She said no, car license (Class 5). I said we only teach truck drivers and said you don't have your car license, as she looked to be late 20's. She said she and her husband just arrived in Canada from Mexico a few months ago with a Mexican drivers license and that she actually challenged the road test and failed. I asked why? She was told at the end of the road test that she failed because she NEVER used her turn signals. Her response to the examiner was, I didn't think you had to because no one else did. I said Welcome to Brandon.
Drive Safe and Be Well.