I was first exposed to Volvo’s Dynamic Steering system on a test track in Europe, and was quite impressed with the way it smoothed out the jarring sensation of a rough road surface.
With some tweaks to accommodate the difference between European cabovers and North American conventional designs, it is now available here.
The electric-over-hydraulic steering support will lessen steering effort by up to 85% at low speeds, but maintain a stiffer feel on the open highway. It all draws on an electric motor on top of the hydraulic steering gear to deliver extra torque as needed, and absorbs steering wheel torque originating at the wheels.
A “zero return” feature will even return the steering wheel to the center position when a truck is in motion, making it easier to reverse, while a lead/pull compensation offers the torque to compensate for crowned roads and steady crosswinds.