Same as the airports of the other countries in Southeast Asia, Bangkok Airport also has a lot of taxi drivers soliciting in the arrival hall, some of them even offer an unbelievably low price, safety or not, it's a question.
The safest way to grab a taxi in Bangkok Airport is going to its official Taxi station, the fare is fixed and reasonable, nothing to worry about.
It is simple, you only need to type in your destination on the computer next to the taxi station, then get in the taxi according to the invoice, the invoice shows personal information of the taxi driver, in case something happens, you can still lodge a complaint.