One ounce per hour. One and one-half ounces per hour. Two ounces per hour. Over time drivers develop an immunity to the effects of alcohol. It takes several drinks to make any change in a driver s ability.
Most people drive better after a drink or two.
Small amounts lower a driver s ability without awareness. It is unlawful in Illinois for the driver or registered owner of a motor vehicle to have an open container of an alcoholic beverage unless a. The driver or registered owner is over 21 years old. The container is kept in the trunk. The container is locked in the glove compartment.