A friend of mine from a former life had relocated from New York to Tokyo. I asked him about first impressions and he told me the taxi drivers in Tokyo had (a)those nifty doors which opened automatically for their fares, (b)neat and clean cabs, and (c)a passable ability to communicate with English speaking customers.
When I was back in Seoul in the 80s and 90s for business, they had a system of color coded cabs. As I recall, the different colors indicated what areas those cabs went. Some stayed in the downtown area, others went out to Kimpo, etc. They also had white gloved drivers, with levers to open the doors. However, many did not speak English!