What is a potential drawback of secondary seat belt laws?

Secondary seat belt laws allow law enforcement officers to issue a citation for not wearing a seat belt only if the driver is pulled over for another violation. One potential drawback of this type of law is that it may not significantly increase compliance among drivers. Since officers are not able to enforce the law exclusively for seat belt violations, many drivers may feel less compelled to wear their seat belts, knowing that they can only be ticketed for the lack of a seat belt if they are already being stopped for another reason. This can result in lower overall seat belt use compared to primary seat belt laws, where an officer can stop and ticket a driver solely for not wearing a seat belt. Increased compliance with seat belt use is important because seat belts are a key safety feature that reduces injuries and fatalities in vehicle crashes.