u/Broad_Block_5064

This article confirms ASEAN drivers license are not accepted and in the 2nd last paragraph you can possibly get deported if you still refuse to co-operate. Vietnam has new laws to easily deport foreigners.

Foreigners caught riding motorbikes without international driving permits in Vietnam’s Khanh Hoa

Great News if you are a bike rider. They do this overseas. Its the only way that car driver will obey the law.

The traffic police will hoist the vehicle to the place of temporary detention if the driver stops, parks illegally and is not present - Labor Newspaper