Abstract: A rotatable-in-place, powered riding vehicle typically may be used as a lawnmower, garden tractor, wheelchair, or warehouse utility truck. Its simplified construction and operator controls facilitate steering maneuverability. Thus the vehicle can be used in tight working places such as narrow aisles, for turning around at the end of rows, and steering around abutments disposed in the travel path, all in forward drive without requiring a reverse gear transmission. This provides more safety and simpler turning than in vehicles requiring a reverse transmission. Also, the vehicle is simplified, quite inexpensive and requires little maintenance and repair. Thus, the set of wheels pivotably mounted and simple control mechanisms provide optimum pivoting in both forward motion and the rotation-in-place steering functions.