This is what you would see on some of the taxis in Bangkok behind the front seat. The taxi meter rate table lists the fare according to the distance. It starts at 35 Baht for the first 2 km and goes upto 285 Baht for 50 km.
It states that the passenger pays for the express way toll. It also states 50 Baht more for the airport, this is strange since I've never paid anything extra from the city to the airport.
