A moving violation is any violation of the law, committed by the driver of a vehicle, while it is in motion. The term "motion" distinguishes it from parking violations. While parking violations are charged against a vehicle (which will be towed if violations go unpaid or are frequent), moving violations are charged against the person driving. Moving violations are usually classified as infractions or misdemeanors, but serious violations can be considered felonies.

In most places, moving violations involve fines which must be paid as well as punitive points assessed to the license of the driver. As a driver accumulates points, he or she may be required to attend defensive driving lessons, re-take his or her driving test, or even surrender his or her license.

While the original intention of the fines was punitive, sometimes tickets are used for fundraising. For example, a local government that suffering a budget shortfall may ticket more aggressively within its jurisdiction to increase revenue.

In the United States, citation fines are nominal dollar amounts, usually between $25 and $1000. In some countries, however, they are specific proportions of the violator's income, and fines in excess of $100,000 can be assessed to wealthy individuals.

Common moving violations include:

• speeding (by far the most common violation)
• not wearing a seat belt
• running a stop sign or red traffic light
• failure to yield to someone with the right of way
• failing to maintain a single lane
• not stopping for a pedestrian in a crosswalk
• crossing the gore (striped area)
• failure to secure a load to a truck or lorry
• driving in a car pool lane illegally
• driving too slow for road conditions, particularly in a left-hand lane
• littering
   

More serious violations include:

• racing on a public street
• road rage
• drunk driving
• vehicular homicide