One of the things I miss most about studying abroad in Japan is being able to take the train anywhere in a timely manner. I wrote about examples of good design I observed while riding the trains and walking the streets of Japan here.
Passengers would often sleep on their ride to work, but how do they know when to wake up on time?
Their traffic lights count down how much time you have to wait and walk when crossing the street!
Bonus: A small icon set of things to remember Japan by.