The use of alcohol or drugs can lead to a collision and/or an arrest.
Some prescription drugs can impair your driving abilities. Some drugs can make you drowsy or impair your coordination. Stimulants can impair your concentration and affect your vision. And once the stimulant wears off, you may "crash" (feel even more drowsy and tired than you did before). Take a prescription drug only if your doctor assures you that the drug won't impair your driving abilities.
B A driver can use any prescription drug while driving.
C Certain prescription drugs are allowed to reduce fatigue.