What constitutes a civil motor vehicle infraction?

A civil motor vehicle infraction is generally defined as a violation of traffic laws that is not considered a criminal offense. Disobeying traffic signals falls under this category, as it involves breaking the rules regulating traffic flow, which is typically addressed through civil penalties rather than criminal charges. This means that while it is a violation of the law, it typically results in fines and points on the driver's record, rather than more severe legal consequences that come with criminal offenses.

In contrast, the other options listed generally lead to more serious implications. Driving without a license is often treated as a more severe violation, potentially leading to criminal penalties. Overloading a vehicle may also attract stricter regulations, especially if it poses safety risks, and could be subject to different legal consequences. Lastly, using a mobile device while driving is classified as a serious safety violation and can lead to substantial fines and legal repercussions, especially with increasing awareness regarding distracted driving.