noun
500-yen taxi; one-coin taxi
A taxi service where rides within a certain area cost a flat 500 yen (one coin). A wasei-eigo term; not used for taxis that simply accept coins.
wasei-eigo (Japanese-coined English), from one-coin taxi
駅前からワンコインタクシーに乗って帰った。
I took a 500-yen taxi home from in front of the station.
この地域ではワンコインタクシーが便利だ。
In this area, 500-yen taxis are convenient.