Traffic police checkpoints in Chiang Mai for scooter driver

Many people ride scooters in Chiang Mai without a license, which is illegal. You can still rent them (rental place won't care if you have or don't have a license) but try avoid those checkpoints where traffic police target foreigners to get money. If you don't have a helmet they will give you a hefty fine as well

Someone put together this checkpoints map, thought it'd be useful:

https://www.google.com/maps/d/u/0/viewer?mid=1nf58F3Ms8G8VQPWoyikIOgO0KYM&msa=0&ll=18.793544706271014%2C99.002523&spn=0.04794%2C0.084543&z=12