Yes, all ebikes by Rad Power Bikes can be pedaled just like a pedal-only bike without any motor assistance.
By turning the bike off, or switching to Pedal Assist Level 0, you are able to pedal and ride the bike as you would any normal pedal bike while shifting gears to accommodate terrain.
Pedaling our bikes without motor assistance will require slightly more effort from the rider compared to a traditional bicycle (especially starting from a standstill) as the rider will have to overcome the weight of the bike. Once the bike moving, it's much easier to maintain speed!
The geared hub motors on the RadRover and RadMini free spin around the axle, meaning they do not provide any resistance when power assistance is disengaged. The direct drive motor on the RadWagon and RadCity does have a small amount of resistance when power assistance is disengaged, but most people do not notice it or feel held back.