.05% - In Colorado, drivers are presumed to be impaired (yellow area) and are subject to arrest.
.08% - Effective July 1, 2004, drivers are presumed to be under the influence (red area) and are subject to arrest. This is a more serious charge than driving while impaired and the driver’s license is immediately confiscated and revoked for three months.
NOTE: This blood alcohol concentration (BAC) chart is only a guide and not sufficiently accurate to be considered legal evidence. The figures you calculate are averages. Individuals may vary somewhat in their personal alcohol tolerance. Food in the stomach slows the rate of absorption. Medication, health, and psychological conditions are also influencing factors.
BLOOD ALCOHOL CONCENTRATION (BAC) CHART Effective July 1, 2004