Driving Aids Development Corporation (DADC), we help people with disabilities make the move from apprehension to independence with reliable, attractive and affordable hand controls. Since 1982, when founder William Perry built a better hand control for his injured son Roger, DADC has designed, built and installed our patented vacuum assisted twist grip hand control for drivers worldwide. Today DADC President Lee Perry, William's son, continues to honor the philosophy of its founder with superior engineering, quality materials, streamline installs and safe and easy operation at an affordable price.
