(US) One who habitually violates minor laws or fails to answer trivial court summonses (such as parking tickets).
2001: 10th International Conference on High-Occupancy Vehicle Systems: Compendium of Technical Papers
The signage will make it clear that if a motorist is an HOV scofflaw (i.e., violator of the vehicle code driving in the HOV-Only zone) that they will be subject to HOV violation fine of at least $271.
Given Montana's continued, fretful association with various scofflaw organizations and its unwanted reputation as a place without speed limits or other boundaries on personal behavior, we might do well to acknowledge the excesses and inherent abuse of power carried out by men who for too many years refused to bow to the police and courts and rule of law.