Driving Laws in Colorado (2026): Rules That Really Matter
Most drivers in Colorado don’t think twice about the laws that actually govern their daily commute. But here’s the thing. Colorado just rolled out some major changes starting in 2025. And if you’re still driving like it’s 2024, you could be in for an expensive surprise.
Let me break down what you need to know to stay legal and safe on Colorado roads.
What Makes Colorado Driving Laws Different?
Colorado has some unique rules that catch people off guard. The state takes road safety seriously, especially when it comes to mountain driving and distracted driving. The laws here reflect the challenges of driving in a state with both urban highways and treacherous mountain passes.
Pretty straightforward stuff, right?
New Hands-Free Cell Phone Law (Started January 2025)
Okay, this one’s important.
As of January 1, 2025, you cannot hold your cell phone while driving in Colorado. Period. This isn’t just about texting anymore. You can’t hold your phone for any reason while behind the wheel.
You must use hands-free accessories. Think dashboard mounts, Apple CarPlay, Android Auto, or Bluetooth speakers. Basically, if you’re touching your phone while driving, you’re breaking the law.
What counts as a violation?
Holding your phone to make a call is illegal. Looking at your phone at a red light is also illegal. Even picking up your phone to change a song while stopped at a traffic light breaks this law. Yep, that’s all you need to know.
Now, here’s where it gets interesting. This is technically a “secondary offense.” That means an officer can’t pull you over just for holding your phone. They need another reason first, like speeding or running a red light. But once they’ve stopped you for something else, that phone in your hand adds another ticket to your collection.
The penalties aren’t a joke:
Your first offense costs you $75 and adds two points to your license. A second offense within seven years bumps the fine higher. Keep doing it, and you could pay up to $250.
Honestly, this is the part most people miss. Those points add up fast. Get too many, and you’re looking at license suspension.
Exceptions do exist:
Calling 911 in an emergency is allowed. First responders can use their phones on duty. If you’re parked with the engine off, you’re fine.
Updated Car Seat Laws (Also Started January 2025)
Sound complicated? It’s actually not.
Colorado updated its child passenger safety laws for the first time in 14 years. These new rules reflect current safety research and are designed to protect kids better.
Here’s what changed:
Children under age two and weighing less than 40 pounds must be in rear-facing car seats. That’s up from the old rule of under one year and under 20 pounds. Kids must stay in car seats or boosters until they’re nine years old and at least 40 pounds. The previous law said eight years old.
Children must ride in the back seat if one is available. This applies to all kids under the required age and weight limits.
Makes sense, right?
These laws exist because car crashes are still the leading cause of death for children in the United States. Proper car seats reduce that risk dramatically. If you’ve got kids, it’s worth getting your car seat checked by a certified technician. You can find one through the National Highway Traffic Safety Administration’s website.
Speeding Laws and Penalties
Let’s talk about speed limits. Most people assume they know how speeding tickets work. They find out the hard way that Colorado treats different speeds very differently.
The basic breakdown:
Going 1 to 24 mph over the limit is a Class A traffic infraction. Going 25 mph or more over the limit is a Class 2 misdemeanor. That second one is a criminal offense. Not a civil fine. A criminal charge.
Wait, it gets better.
If you’re speeding in a construction zone, the fines double. And if you’re caught going 25 mph or more over the limit in a construction zone, that’s a Class 1 misdemeanor. Even more serious.
Here are the actual fines for Class A infractions:
1 to 4 mph over the limit costs you about $36 total with surcharges. 5 to 9 mph over runs you $80 total, plus one point on your license. 10 to 19 mph over costs $151 total, plus four points. 20 to 24 mph over hits you with $232 total, plus six points.
Those surcharges fund victim compensation programs, so they’re mandatory on top of the base fine.
For Class 2 misdemeanors (25+ mph over):
You’re looking at $150 to $300 in fines. You could face 10 to 90 days in jail. You’ll get six to 12 points on your license depending on how fast you were going.
Judges rarely give jail time for speeding alone. But it’s possible. Especially if you’re going 40+ mph over the limit or causing reckless situations.
Hold on, this part is important. Colorado uses a point system. Adults aged 21 and older can have their license suspended if they rack up 12 points in 12 months or 18 points in 24 months. For drivers aged 16 to 18, the threshold drops to just six points in 12 months.
DUI and DWAI Laws
Colorado has some of the strictest DUI laws in the nation. Trust me, this works. The state makes it really expensive and inconvenient to drive drunk.
Understanding the levels:
DUI (Driving Under the Influence) means your BAC (blood alcohol content) is 0.08% or higher. DWAI (Driving While Ability Impaired) means your BAC is between 0.05% and 0.079%. For drivers under 21, the limit is just 0.02%.
You can still get a DUI even if your BAC is under 0.08%. If you’re clearly impaired by drugs, alcohol, or a combination, you’re breaking the law.
Wondering if this applies to you? If you drive in Colorado, it does.
First offense DUI penalties:
Five days to one year in jail (mandatory 10 days if your BAC is 0.20% or higher). Fines of $600 to $1,000 plus court costs. 48 to 96 hours of community service. License revocation for nine months. 12 points on your DMV record.
You might be eligible for a probationary license immediately if you install an ignition interlock device. That’s a breathalyzer connected to your car’s ignition. You blow into it before the car starts. It costs money to rent and maintain.
Second offense penalties get worse:
Mandatory minimum of 10 days in jail, up to one year. Fines of $600 to $1,500. 48 to 120 hours of community service. License revocation for one year. Mandatory alcohol education and treatment.
If your second DUI happens within five years of the first, you must serve those 10 days consecutively. No breaks.
Third offense or subsequent:
60 days to one year in jail. Fines of $600 to $1,500. Lengthy license revocation. Mandatory probation for at least two years.
A fourth DUI automatically becomes a felony. You’re looking at two to six years in prison, fines up to $500,000, and permanent loss of certain civil rights.
Not sure what counts as a violation? Basically, any time you’re driving with alcohol or drugs in your system that impair your ability to drive safely.
Colorado’s implied consent law:
By driving on Colorado roads, you’ve already agreed to submit to chemical testing if arrested for DUI. If you refuse, you face automatic consequences. Your license gets suspended immediately. The refusal can be used against you in court.
Persistent Drunk Driver (PDD) classification:
You get labeled a PDD if you have two or more alcohol-related driving violations, drive with a BAC of 0.15% or higher (even on a first offense), get caught driving under restraint, or refuse chemical testing.
This classification means mandatory ignition interlock for at least two years. More severe penalties across the board.
Honestly, just don’t drive drunk. Use Uber, Lyft, a designated driver, or public transit. It’s way cheaper than a DUI.
Winter Traction Laws
Okay, pause. Read this carefully.
If you drive in the mountains during winter, this could save your life. And your wallet.
Colorado has a Passenger Vehicle Traction Law that’s active from September 1 through May 31 on I-70 between Dotsero and Morrison. It can be activated on any state highway when conditions require it.
The tire requirement for everyone:
Your tires must have at least 3/16 of an inch of tread depth. Check your tires. Seriously. Use a tread depth gauge or the penny test. If you can see the top of Lincoln’s head when you stick a penny upside down in the tread, your tires are too worn.
For 2WD (two-wheel drive) vehicles:
You must have chains or an approved Alternative Traction Device installed on two or more drive tires when the law is in effect. There is no tire-only option anymore. You need chains or an ATD. No exceptions.
For AWD and 4WD vehicles:
You need tires with at least 3/16-inch tread depth that are rated mud and snow (M+S), all-weather, or winter tires. The mountain-snowflake icon on the tire sidewall indicates proper winter tires. Or you can use chains or an approved ATD on two or more drive tires.
Many people assume AWD is enough. It’s not. Your tires must also meet the minimum requirements.
When the Chain Law goes into effect:
During severe winter storms, CDOT implements the Passenger Vehicle Chain Law. This is the final step before they close the highway completely. Every vehicle, including AWD and 4WD, must have chains or an approved ATD installed.
Not following these laws can result in fines. Worse, you could cause an accident or get stranded in dangerous conditions.
Express Lane Violations
Here’s one most people don’t realize is actually enforceable now.
Starting January 1, 2025, you can be fined for weaving in and out of express lanes outside designated areas. This applies to the Central 70, I-25 South Gap, and US 36 corridors.
The fine starts at $75. If you don’t pay within 20 days, it goes up to $150. The law allows fines up to $250.
Why the crackdown? Jumping in and out of express lanes causes sideswipe accidents and rear-ending accidents. It’s legitimately dangerous.
Stay with me here. Express lanes are designed for continuous flow. When drivers dart in and out randomly, they disrupt that flow and create collision risks.
Firearm Storage in Vehicles (New in 2025)
If you carry firearms, this law affects you.
Starting January 1, 2025, you cannot leave a handgun in an unattended vehicle unless it’s stored in a locked hard-sided container. The container must be out of view. The vehicle must be locked.
For firearms that aren’t handguns, you must store them in a locked hard-sided or soft-sided container. If using a soft-sided container, the firearm must have a locking device installed on it.
Exceptions exist for:
Antique firearms. Guns in vehicles used for farm or ranch operations. People who live in their vehicles. Police and members of the armed forces. Certain hunting-related activities.
This law aims to prevent firearm thefts from vehicles. Pretty straightforward.
Other Important Traffic Laws
Let me hit you with a few more rules that trip people up.
Running red lights and stop signs:
You must come to a complete stop before the stop line, crosswalk, or intersection. Right turns on red are allowed unless a sign prohibits it. Violations carry fines and points on your license.
Insurance requirements:
Colorado requires minimum auto insurance. You must carry proof of insurance in your vehicle at all times. Driving without insurance can result in fines, license suspension, and other penalties.
License and registration:
Keep your license current. Make sure your vehicle registration is up to date. Expired plates or licenses can get you pulled over.
How Points Work on Your License
Colorado uses a point system to track violations. Different infractions carry different point values.
Point values for common violations:
Careless driving: 4 points. Speeding 5-9 mph over: 1 point. Speeding 10-19 mph over: 4 points. Speeding 20-39 mph over: 6 points. Speeding 40+ mph over: 12 points. DUI or DWAI: 12 points.
Point accumulation thresholds:
Adults (21+): 12 points in 12 months or 18 points in 24 months triggers suspension. Young drivers (18-20): 9 points in 12 months or 12 points in 24 months. Teen drivers (16-17): 6 points in 12 months triggers suspension.
Points stay on your record permanently. But they only affect your driving privileges for two years.
You’re not alone if this confuses a lot of people. The key is to avoid violations in the first place.
What to Do If You Get a Traffic Ticket
Don’t ignore it. That’s the worst thing you can do.
For traffic infractions:
Failing to pay or appear results in a default judgment. The case goes to collections. Your credit takes a hit.
For traffic misdemeanors:
Failing to appear results in a bench warrant for your arrest. You get charged with an additional offense. The DMV can suspend your license.
You have options. You can pay the ticket (which is admitting guilt). You can fight the ticket in court. You can hire a traffic lawyer to negotiate on your behalf.
Many lawyers can appear in court on your behalf for minor infractions. For serious charges like DUI, you absolutely need a lawyer.
How to Stay Compliant
It’s more common than you think to accidentally break these laws. Here’s how to avoid problems.
Use hands-free devices:
Buy a phone mount for your dashboard. Connect your phone via Bluetooth. Use voice commands for everything. Put your phone out of reach before you start driving.
Check your car seats:
Make sure they’re installed correctly. Get them inspected by a certified technician. Replace them after any accident.
Monitor your speed:
Use cruise control when possible. Pay attention to speed limit signs. Slow down in construction zones. Be extra careful in school zones.
Prepare for winter driving:
Check your tire tread depth before winter. Keep chains or an ATD in your vehicle if you drive in the mountains. Check road conditions before heading into the high country.
Never drive impaired:
Plan ahead for a sober ride home. Use rideshare apps. Take public transit. Stay overnight. Whatever it takes.
Special Circumstances and Exceptions
Most laws have exceptions. Let’s cover a few.
Medical emergencies:
If you’re driving someone to the hospital in a genuine emergency, courts may show leniency. But this doesn’t make speeding or running red lights legal. You’re still taking a risk.
Law enforcement and first responders:
They have exemptions for phone use, speeding, and other rules when responding to emergencies. Regular drivers don’t get these exemptions.
Commercial drivers:
Different rules apply if you have a commercial driver’s license. The hands-free phone law doesn’t apply to CDL holders operating commercial vehicles.
Frequently Asked Questions
Can I use my phone at a stoplight in Colorado?
No. The hands-free law applies even when you’re stopped at a red light. Your phone must stay mounted or put away the entire time you’re driving.
What happens if I refuse a breathalyzer test?
Your license gets automatically suspended. The refusal can be used as evidence against you in court. You may face additional penalties beyond what you’d get for a DUI conviction.
Do I need snow tires to drive in Colorado?
Not everywhere. But if you’re driving on I-70 or other mountain highways when the Traction Law is active, you need proper tires with adequate tread depth or chains.
How long do points stay on my license in Colorado?
Points remain on your record permanently. However, they only count toward license suspension for two years from the date of conviction.
Can I get a DUI for marijuana in Colorado even though it’s legal?
Yes. Driving with five nanograms or more of THC in your blood is illegal. Even if you’re not visibly impaired, you can be arrested and charged with DUI.
Final Thoughts
Now you know the basics. Colorado’s driving laws are designed to keep everyone safer on the roads. The new hands-free phone law, updated car seat requirements, and strict DUI penalties reflect the state’s commitment to reducing accidents and fatalities.
Stay informed. Stay safe. And when in doubt, slow down, put the phone away, and drive defensively. These laws exist for a reason. Following them protects you, your passengers, and everyone else on the road.
If you get a ticket or face serious charges like DUI, talk to a lawyer. They know the system and can help protect your rights and driving privileges.
