A selectively operable steering locking mechanism includes front and back pivot locks, each respective one selectively movable between: a locked configuration whereat a respective front, or back, caster of the cart is precluded from pivoting about its vertical axis; and an unlocked configuration whereat the respective front, or back, caster is free to pivot its vertical axis. An interconnection mechanism interconnects the front and back pivot locks for synchronized movement between: a front-locked steering configuration whereat the front and back pivot locks are in the locked and unlocked configurations respectively; and a back-locked steering configuration whereat the front and back pivot locks are in the unlocked and locked configurations respectively. A control mechanism connects to the interconnection mechanism for its selected movement between the front-locked and back-locked steering configurations. A cart provided with the selectively operable steering locking mechanism is also disclosed.