A big percentage of car accidents happen due to the inadequacy of people to drive properly. Here are some frequently asked questions about driver safety norms and codes in San Mateo that make sure everyone’s safe on the road: What can the department of motor vehicles do about a person who is unable to drive safely because of mental or physical disorder or condition? The law permits DMV to reexamine and investigate a person's ability to drive a motor vehicle safely. What are the types of conditions that can hamper a person's capability to drive safely? Any disorder that might obstruct alertness, physical coordination, strength, agility, attention, judgment, knowledge, or skills required to safely operate a vehicle is a concern to the department of motor vehicles. The health issues may be temporary, such as the effects of a heart stroke, or may be permanent such as a diabetic condition or an uncontrolled seizure. It may also be a progressive condition