All-terrain mobility scooters include knobby tires, robust motors, and improved ground clearance to take on gravel paths

https://www.scribd.com/document/1048363197/Why-Adding-A-Scooters-Mobility-To-Your-Life-Will-Make-All-The-Change-127763

All-terrain mobility scooters include knobby tires, robust motors, and enhanced ground clearance to deal with gravel paths, lawn, and moderate off-road surface areas.