Dynamic steering response (DSR) is a car safety technique that corrects the rate of hydraulic or electric power steering system to adapt it to vehicle's speed and road conditions. Similar to DIRAVI, this system was first featured in the SEAT Leon Cupra R and has since been used in a wide range of models including the Ibiza, Cordoba, new Leon, Altea and new Toledo.
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Working
It works through a precisely controlled electric motor, which is mounted on top a hydraulic steering gear. For the motor's control, it picks up the data at 2000 times a second (as in Volvo truck FM Series) based on the input from the driver, and from the on-board sensors. Its purpose is to provide precise steering control in every situation.
Benefits
It increases the vehicle's maneuverability, making it more comfortable to drive. This takes away the physical effort of steering even at low speeds, regardless of how heavy the load is, by continuous feedback and sensing by the system. It improves the directional stability at high speeds, so that no small steering adjustments are needed. It diminishes the effect of road disturbances such as bumps and potholes, on the steering wheel at the cockpit. It detects the unwanted deviations in the wheels, with the electric servo motor balances it out.