Police records show that almost 40 percent of all motorvehicle-related deaths involve alcohol. In most cases,these deaths are the result of someone who was drinkingand driving. In recent years, more than 17,000 annualmotor vehicle-related deaths have been associated withthe use of alcohol, with about 250,000 people injured.For persons under 21, it is against the law in everyU.S. state to drink alcohol. There are good medical,psychological, and developmental reasons forthese laws.The obvious way to eliminate the leading highwaysafety problem is for people never to drink alcohol andthen drive.Medical research shows that alcohol in a person’ssystem can make crash injuries worse, especiallyinjuries to the brain, spinal cord, or heart. This meansthat when anyone who has been drinking — driveror passenger — is in a crash, that person’s chance ofbeing killed or permanently disabled is higher than if theperson had not been drinking.Control of a VehicleThe following three systems help to control your vehiclewhile driving — brakes, steering, and accelerator. Attimes, as when driving on snow or ice, it is easy to askmore of those control systems than the tires and road canprovide. Meaning, you can lose control of your vehicle.See Traction Control System (TCS) on page 4-6.Adding non-dealer/non-retailer accessories can affectyour vehicle’s performance. See Accessories andModifications on page 5-3.BrakingSee Brake System Warning Light on page 3-37.Braking action involves perception time and reactiontime. First, you have to decide to push on the brakepedal. That is perception time. Then you have to bringup your foot and do it. That is reaction time.4-3