Regarding disability certificate discount travel on JR line

[KobeBusFamousNYLover]

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I have Kobe-shi disability welfare handbook which is B1. I live in Kobe and I have following question:

How many kilometers from Rokkomichi, Ashiya or Sannomiya to get reduced fare on JR train or Shinkansen from Shin-Kobe?

Jr attendee told me I can get half fare discount like Nagoya or Hiroshima. Is Tokyo too close for half fare discount?

 

For Hanshin Railway and Hankyu Railway, I have to be accompany by caretaker? How far we can go from Sannomiya  area, Rokko/Shizaike, Mikage or Ashita Station to get reduced fare discount?

 

Thank you for your help. 

 

I moved back to Japan, but some Kanjis I can't read.