Steering system for a zero-steer vehicle

A vehicle having a zero-steer arrangement, the arrangement comprising:

• a forward steering assembly coupled to a steering wheel and a forward set of wheels of the vehicle, the forward steering assembly arranged to receive an input form the steering wheel and rotate the forward set of wheels and including a selectively actuateable forward motorized mechanism;
• a rearward steering assembly coupled to a rear set of wheels and including a selectively acutateable rearward motorized mechanism;
• an actuation mechanism coupled to the forward motorized mechanism and the rearward motorized mechanism and arranged to selectively engage the motorized mechanisms;
• and
• a powertrain system arranged to selectively drive a passenger side set of wheels in one of a same direction and an opposite direction as a driver side set of wheels;
• wherein, upon selective actuation, the forward motorized mechanism is arranged to engage the forward steering assembly and rotate the forward set of wheels toward a centerline of the vehicle and the rearward motorized mechanism is arranged to engage the rearward steering assembly and rotate the rearward set of wheels toward the centerline of the vehicle such that the wheels are positioned to allow the vehicle to turn about a central point of the vehicle in a zero-steer configuration, and wherein the powertrain arrangement is selectively actuated to drive the passenger side set of wheels in an opposite rotation as the driver side set of wheels to propel the vehicle in the zero-steer configuration;
• and
• wherein the forward steering assembly comprises a forward rack and pinion steering assembly and the rearward steering assembly comprises a rearward rack and pinion steering assembly.