Alcohol Impaired Driving Laws: Colorado
Ignition Interlocks
Mandatory for high BAC (0.15 and above) and repeat convictions, highly incentivized for first convictions
GHSA maintains data on state laws surrounding a number of highway safety issues. Below is information regarding laws in the state of Colorado. For more information, consult the State Highway Safety Office.
Helmets required for all riders and passengers under 18. Universal helmet law repealed 1977.
10 years
80 and older: electronic renewal requires passage of vision exam within the prior 6 months
Permissible inference law >0 for THC
Decriminalized and legal for recreational and medical use
Permissible inference for THC (5 ng)
75
75
65
65
65
65
No
0.15
3 months
Yes
Mandatory for high BAC (0.15 and above) and repeat convictions, highly incentivized for first convictions
Yes
Under 2 yr and under 40 lbs in rear-facing child restraint
More than 40 lbs may ride forward-facing; 2-3 years and at least 20 pounds may ride in either a rear or forward-facing child restraint
4-8 years and at least 40 lbs in child restraint or booster (effective 01/01/25)
8 and younger must be in the rear seat if available (effective 01/01/25)
9-17 yrs (effective 01/01/25)
17 years
15 with driver's ed 15 / 6 with driver awareness program 16 without driver's ed. or program
12
50 (10)
16
Midnight - 5 a.m. (secondary enforcement)
First 6 months: no passengers Second 6 months: no more than one passenger (secondary enforcement)
16 and over (primary law for under 18)
Front
Secondary
Yes (effective January 1, 2025)
No
Drivers under 18. Primary law.
All drivers. Primary law.
Permitted by state law and city ordinance
School zones, residential neighborhoods, construction zones (only when construction is occurring), and streets that border a municipal park; police officer or government employee must be present at time of violation
Permitted by state law
Statewide
Ignition Interlocks
Mandatory for high BAC (0.15 and above) and repeat convictions, highly incentivized for first convictions
Child Restraint Required
Under 2 yr and under 40 lbs in rear-facing child restraint
More than 40 lbs may ride forward-facing; 2-3 years and at least 20 pounds may ride in either a rear or forward-facing child restraint
4-8 years and at least 40 lbs in child restraint or booster (effective 01/01/25)
8 and younger must be in the rear seat if available (effective 01/01/25)
Full Privilege Minimum Age
17 years
Type of Law
Secondary
Hand-Held Ban?
Yes (effective January 1, 2025)
Speed Cameras
Permitted by state law and city ordinance
Red Light Cameras
Permitted by state law
All
Double original fine
No
No