The word “ride” can be translated into the sign as the transportation itself. 

Ride a bike = biking
Ride on the plane = flying
Ride a skateboard = skateboarding 
​
Don’t need to sign “ride” for:
Bicycle
Skateboard
Scooter
Motorcycle
Boat
​Plane

examples
plane
We rode a plane. 

boat
They ride on the boat. 

bike
I rode the bike to the school.