The terms "designated driver" and "designated driving" refer to selecting a person to remain sober, as the driver of a vehicle, while others are allowed to drink to excess (with alcoholic beverages). A designated driver is a person who abstains from alcohol on a social occasion in order to drive his/her companions home safely. It is intended as a safe alternative to driving under the influence. In order to encourage these arrangements, some bar, restaurant and nightclub proprietors will offer free non-alcoholic drinks to designated drivers.[1]