There are two kinds of taxis; general and deluxe. General taxis are usually white or gray. Deluxe taxis, called 'mobom' taxis  in Korean, are black with a yellow sign on the top and the words  'Deluxe Taxi' written on the side. Mobom taxis are more expensive. In both kinds of taxis, however, 20% extra is added to the fare in the night from 12 a.m. to 4 a.m. Regular taxi fare begins at 1500won (1800 won between 12am-4am) and Deluxe Taxi fare begins at 2000won (2400 won between 12am-4am). Additional fare is added based on time and distance. The meter should always be turned on at the beginning of the trip, otherwise the driver may try to charge a higher fare than appropriate.   Boarding with other passengers not belonging to the same group is not allowed on principle, but boarding with passengers going the same direction can be permitted. In case of boarding with other passengers admitted, you should pay the whole taxi fare separately from the other passengers.