Free Taxi

空車
くうしゃ
Empty taxi

This is the one to look for when you need a taxi. I find it really difficult to see usually, because it's behind the windshield and sometimes a bit glarey. It's often just as easy to see if there is a person in the back seat or not.

In a Taxi 4

緊急時のカバー取外し方向（ドアをお開け下さい。）
きんきゅうじのカバーとりはずしほうこう（ドアをおあけください。）
In an emergency, remove the cover in this direction (and open the door.)

I would rip that thing off so fast in an emergency. On the cover of a taxi door handle. Maybe it's to stop kids accidentally launching themselves from speeding cabs.

In a Taxi 3

SuicaとPasmoとIcocaご利用いただけます
SuicaとPasmoとIcocaごりよういただけます
Suica, Pasmo and Icoca can be used.

All these are types of Radio Frequency electronic tickets. Suica also means watermelon, 西瓜　（すいか）.

In a Taxi 2

深夜早朝２割増、２２時から５時まで
しんやそうちょう２わりまし、２２じから５じまで
Late at night and early in the morning there is a 20% surcharge, from 10pm to 5am.

I would call it a 'surcharge' but you might say 'premium'. 割　（わり）　is also a signifier for a 'unit of ten percent', so I think the surcharge would be 20%. It wouldn't make sense for it to only be 2%.

In a Taxi

カードをふれてください
カードをふれてください
Please touch your card here.

I've finally managed to be in a taxi in the daytime and sober. You can pay by Suica or Pasmo RFID cards in some taxis. Mostly you use these electronic tickets on the subway, but they are also being used lately to purchase things from vending machines or at konbinis.