SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/cdl-serious-violation-speeding-15

Speeding counts as a serious traffic violation for CDL holders at how many mph over the limit?

15 mph or more over the posted limit.

Start playing free

  1. 10 mph or more
  2. 15 mph or more ✔
  3. 25 mph or more

Why: Excessive speeding, meaning 15 mph or more over the limit, is a serious traffic violation. So are reckless driving, erratic lane changes and following too closely.

Huh, didn't know that: Texting or holding a phone while driving a CMV is also a serious traffic violation.

The dad joke
Why did the snail paint an S on its car? So people would say look at that S car go.
Like this card?
Play the game

References

Answer: 15 mph or more. Excessive speeding, meaning 15 mph or more over the limit, is a serious traffic violation. So are reckless driving, erratic lane changes and following too closely.

  1. 49 CFR 383.51 Disqualification of drivers (eCFR) www.ecfr.gov/current/title-49/section-383.51
    Speeding excessively, involving any speed of 24.1 kmph (15 mph) or more above the regulated or posted speed limit
    Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Cars & DrivingHow long do you lose your CDL for two serious traffic violations in a CMV within 3 years?Cars & DrivingWhat blood alcohol level is illegal for someone driving a commercial motor vehicle?Cars & DrivingA CMV driver has a detectable amount of alcohol, but under 0.04. What happens?

That's stuff everyone should know.