Abstract: An adjustable hydraulic steering stabilizer for a roadway vehicle including a stabilizing bar attached to each front wheel assembly, a friction strip for engaging each bar to resist undesired turning of the wheel assemblies, a hydraulic pump and hydraulic cylinders for biasing the strips against the stabilizing bars, thereby providing forces resisting turning of the wheel assemblies. The vehicle operator may adjust the hydraulic system to vary the pressure biasing the friction strips against the bars, thereby varying the damping force in accordance with driving conditions.