125 cc of motorcycle is treatment as a motorbike, so a motorway and a freeway can't run.
Division of a driver's license will be usually Niwa's (to 400cc) small limitation (below 125ccc).
CBR125R goes out to max speed 120km/h.
When running through the general way, I make it necessary, and it's the enough level.
The actual mileage is about 45km/L, and a tank is 13L.
More than 550 km can be run in the state of the fill up the tank.
postscript
The general way is 60km/h in Japan.
A car and a motorcycle are 100km/h in a motorway and an autobahn. A truck is 80km/h.
Bypasses are 70km/h and 80km/h by a place on the motorway.
The location of the meeting passing in one lane is 80km/h in a certain freeway.
A typhoon and storm snow will be Street closed.
Rain and in case of snow of the degree which won't be Street closed will be 50km/h.
A mountain path is 40km/h and is 50km/h by downtown.
There is also at 20km/h by a case by 30km/h at a residential area.