The traffic accident and violation rates of Washington's 39,242 medically restricted drivers were compared with the accident and violation rates of all 1.6 million licensed Washington drivers. Statistically higher accident rates were reported for persons whose licenses are restricted as a result of diabetes, epilepsy, fainting, and other conditions. Persons with a license restriction for heart disease had slightly, though not statistically, higher accident rates, and persons with vision deterioration had slightly, though not statistically, lower accident rates. Statistically higher violation rates were recorded for persons with diabetes, epilepsy, and other conditions. The violation rate for the group with heart disease was statistically lower. The group with physical handicaps such as paralysis, loss of limb, stabilized vision defects, etc, had a statistically higher accident rate and a slightly, though not statistically, higher violation rate. © 1968, American Medical Association. All rights reserved.