Final answer:
Vehicles with after-market window tinting must comply with local regulations and laws which dictate the permissible tint level and can face fines for non-compliance.
Step-by-step explanation:
Vehicles with after-factory window tinting will be subject to various regulations and laws depending on the jurisdiction. Generally, the tinting must allow a certain percentage of light to pass through and the visibility of the driver must not be impaired. Law enforcement can issue fines for non-compliance. It's important that vehicle owners check their local laws before having their windows tinted to avoid any legal issues.