Indiana has what is called a 'primary offence' seat belt law, which means that police officers can stop and cite a driver or required passenger for a seat belt law violation alone.

Other states have 'secondary offence' seat belt laws, which means that police officers cannot directly stop a vehicle for a seat belt law violation but can issue a citation for a violation if the vehicle is stopped for another offence that constitutes a primary offence for stopping cars.

What the IN law does prohibit, though, as cited in the statute above, is police officers setting up road checkpoints for seat belt law enforcement. Many states authorise police checkpoints on roads for enforcing their vehicle codes, especially for the purpose of enforcing DUI/DWI/OUI laws. IN has decided to prohibit using that tactic for enforcing its seat belt law.