Colorado online defensive driving course Everyone is in a hurry. You have a plan.

Heavy traffic, short tempers, no room to make a mistake. Learn to see trouble early, keep your space, and get home, with Colorado's roads, weather, and traffic law, and a certificate anyone can verify.

  • Start free, pay when you pass
  • Works on your phone
  • Verifiable certificate
Stopping distance

Move the slider. This is how far a passenger car travels before it stops.

265 ft
about 18 car lengths
Reaction, 1.5 seconds: 121 ftBraking: 144 ft

An estimate for teaching, not a guarantee. It assumes an alert driver (1.5 seconds to react), good tires, a level road, and tire grip of 0.7 on dry pavement, 0.4 wet, 0.25 on packed snow, and 0.1 on ice. This is the distance to stop, not a safe following distance: stay at least 3 seconds behind the car ahead, and more in bad weather.

A car braking early in heavy freeway traffic, leaving a safe gap to the vehicles ahead
Brake early, keep the gap

See it early. Stop smoothly.

Most rear-end crashes have one cause: not enough room. You will learn to read brake lights three cars ahead, count a real following distance, and stop without drama.

  • The 3-second rule, and when it is not enough
  • Stopping distance on dry, wet, snow, and ice
  • What to do when someone is on your bumper
A driver holding back in traffic to let another car merge
Give way, stay calm

Let them in. Lose nothing.

Giving up one car length costs you about a second. Fighting for it can cost a lot more. You will learn right-of-way, merging, and how to stay out of someone else's bad day.

  • Who yields at merges, roundabouts, and four-way stops
  • The zipper merge and Colorado's left-lane law
  • Handling aggressive drivers without escalating

How it works

  1. Enroll

    Create an account and confirm who you are. Starting a course is free.

  2. Study the lessons

    Short, timed lessons with a knowledge check after each. Your place is saved, so you can switch between computer and phone.

  3. Pass the final exam

    Score 80% or higher. The questions are drawn at random each time.

  4. Get your certificate

    Pay once you pass. Your certificate carries a number and a QR code your insurer, court, or employer can check on this site.

Choose your course

Colorado · 4-hour course

Defensive Driving, 4-Hour

The standard course: 14 lessons on space, speed, attention, impairment, Colorado weather, and Colorado traffic law.

  • 14 lessons, 4 hours of timed study
  • Final exam: 25 questions, 80% to pass
  • Certificate with a verification number

For: Drivers who want an insurance discount, were asked by a court or employer to take a course, or want a refresher.

$24.95when you pass
See the lessons in this course
Colorado · 8-hour course

Defensive Driving, 8-Hour

The full course: 18 lessons with extended material in every lesson, plus night driving, freeways and work zones, risk, and vehicle technology.

  • 18 lessons, 8 hours of timed study
  • Final exam: 40 questions, 80% to pass
  • Certificate with a verification number

For: Drivers asked for an 8-hour course, professional and fleet drivers, and anyone who wants the complete program.

$39.95when you pass
See the lessons in this course
Colorado · 4-hour course

Mature Driver (55+)

Defensive driving for experienced drivers, with lessons on vision, health and medicines, vehicle technology, and planning ahead.

  • 14 lessons, 4 hours of timed study
  • Final exam: 25 questions, 80% to pass
  • Certificate with a verification number

For: Drivers age 55 and older.

$19.95when you pass
See the lessons in this course

Built from official sources

Every lesson is original and lists its sources: the Colorado Driver Handbook, Colorado traffic law (C.R.S. Title 42), Colorado Department of Transportation crash data and winter driving rules, and National Highway Traffic Safety Administration research.

21lessons across all courses
3courses, each with its own final exam
80%needed to pass
701lives lost on Colorado roads in 2025

Reviewing the course for an insurer or a court?

See the course controls: timed lessons, identity checks, a server-graded exam, and how to verify any certificate.

Employers and fleets

Enroll a team with one seat code and keep a verifiable record of every driver who finished.

The next close call is already on its way.

Be ready for it. Start any course free and pay only when you pass.

Insurance discount or court requirement?

Check with your insurer or the court that they accept this course before you rely on it. If your certificate is not accepted, we refund you in full.