Hi.
In France electrical helped bikes are allowed, but the max speed is 25Km/h, and the motor must not help while the biker isn't pedalling!
So motorized bikes with gas engine are totally illegal.
They might be legal if your vehicle is officially recognised, but it is very difficult, and you must have a licence to drive it (over 16 years old <50cc, with a 2 years old driving licence <125cc, and more with a motorcycle driving licence)
In France electrical helped bikes are allowed, but the max speed is 25Km/h, and the motor must not help while the biker isn't pedalling!
So motorized bikes with gas engine are totally illegal.
They might be legal if your vehicle is officially recognised, but it is very difficult, and you must have a licence to drive it (over 16 years old <50cc, with a 2 years old driving licence <125cc, and more with a motorcycle driving licence)