Colorado Permit Test Study Guide (2026)

Cover every topic on the Colorado DMV permit test, ranked by how often they show up on the real exam.

The Colorado Driver Handbook is published by the Division of Motor Vehicles. It covers everything on the permit test: traffic laws, safe driving practices, driving under the influence, emergencies, sharing the road, and rules at intersections. Read each chapter, take notes, and quiz yourself before moving on.

Colorado Speed Limits

Speed limits are one of the most-tested topics on the CO permit exam, and the questions usually test Colorado's statutory default limits -- what the speed is when no sign is posted. Under C.R.S. Section 42-4-1101, Colorado's defaults are 25 mph in a business district and 30 mph in a residence district, with local authorities able to lower either after a traffic study. School zones are locally set, typically 15-25 mph, with doubled fines for violations. Always obey the basic-speed law: never drive faster than is safe for current conditions.

Alcohol & BAC Limits

Expect at least one alcohol question on the Colorado permit test. Memorize the three BAC thresholds: 0.08% is the legal limit for drivers age 21 and older, 0.04% is the limit for anyone driving with a commercial driver license (CDL), and Colorado's Underage Drinking and Driving law (C.R.S. Section 42-4-1301) covers drivers under 21 with a BAC from 0.02% up to 0.05% -- a class A traffic infraction with no jail time on a first offense. Above 0.05%, age stops mattering: 0.05%-0.07% is a DWAI, and 0.08% or higher is a full adult DUI.

Right-of-Way Rules

Right-of-way is the single most-missed topic across every state's permit test. The rules are simple once you memorize them. At a 4-way stop, the first vehicle to fully stop goes first; if two arrive together, the driver on the right has the right of way. At an uncontrolled intersection, yield to any vehicle already in the intersection and to the driver on your right. At roundabouts, yield to traffic already circulating and enter only when there is a safe gap. Always yield to pedestrians in any crosswalk, marked or unmarked, and to emergency vehicles with lights and sirens — pull right and stop. When turning left across oncoming traffic, you must yield to oncoming vehicles. Yield does not give you the right of way; it requires you to give it up.

Following Distance & Safety

Colorado's driving guidance recommends at least a 3-second following distance, adding a second for every 10 mph over 30 mph -- so 4 seconds at 40 mph, 5 seconds at 50 mph. Pick a fixed point on the road and count as the vehicle ahead of you passes it; if you reach the same point before finishing your count, you're following too closely. Colorado's own traffic law just requires a distance that's reasonable and prudent, without naming an exact number.

Road Sign Colors & Shapes

Road signs on the CO permit test follow the federal Manual on Uniform Traffic Control Devices, so shapes and colors are consistent across the country. Memorize the shapes first: octagon always means stop, downward triangle means yield, diamond means warning, pentagon marks a school zone, round warns of a railroad crossing, and horizontal rectangle is a guide sign. Then learn the colors: red is stop or prohibition, yellow is general warning, orange is construction, green is directions and exits, blue is driver services, brown is recreation, and fluorescent yellow-green is for schools and pedestrians. Practice identifying signs by shape and color alone — see the full visual cheat sheet on our Colorado road-signs page.

Key Colorado Numbers to Memorize

If you only remember a handful of facts going into the test, make it these. Every one of them maps to questions that have appeared on the real CO exam.

Parking Rules

Parking questions on the Colorado permit test cover two patterns everywhere. For parallel parking, your wheels should be no more than 12 inches from the curb. For hill parking, the kerb rule decides which way your front wheels point: facing downhill (with or without a curb), turn the wheels toward the curb; facing uphill with a curb, turn the wheels away from the curb so they rest against it; facing uphill with no curb, turn the wheels toward the edge of the road. Always set the parking brake and leave the car in park (or in low gear with a manual).

Colorado's no-parking zones (C.R.S. Section 42-4-1204) you must memorize: within 15 feet of a fire hydrant, within 20 feet of a crosswalk at an intersection, within 30 feet on the approach to a flashing beacon, stop sign, yield sign, or traffic control signal, and within 50 feet of the nearest rail at a railroad crossing.

GDL Restrictions (CO)

Colorado requires holding the instruction permit a full 12 months -- longer than most states -- with 50 hours of supervised driving, including 10 at night, certified by a Colorado-licensed parent, guardian, or approved alternate supervisor. The first-year minor driver license's night curfew runs midnight to 5 a.m. (exceptions for a parent or guardian riding along, or documented work/school trips). Passenger restrictions: no passengers under 21 for the first 6 months unless a parent or another driver 21 or older is present, then one passenger under 21 for the second 6 months. Expect 1-3 GDL questions on the CO exam.

DUI & Drug Laws

DUI questions go beyond the BAC limits in Section 2. Three concepts you must know: implied consent means refusing a chemical test triggers automatic license suspension on top of any DUI charge. Prescription and over-the-counter drugs can also impair driving — antihistamines, sleep aids, painkillers, and some cold medicines list "do not operate heavy machinery" warnings, and driving impaired by them is a DUI even if you have a valid prescription. Marijuana — even where state-legal — is treated like alcohol for driving: any detectable impairment can result in a DUI, and edibles can take 1–3 hours to peak. The only safe BAC and the only safe THC level for driving is zero. There is no quick way to sober up; only time will lower your BAC.

Now Test What You've Studied

Five questions pulled at random from our Colorado question bank — a mix of road signs, traffic laws, and right-of-way. Answer to see the correct choice and a short explanation. For a full timed exam, take the free practice test.

Colorado Study Guide FAQ