What is the primary purpose of vehicle identification stickers or decals?

The primary purpose of vehicle identification stickers or decals is to display legal compliance. These stickers often contain important information such as the vehicle's registration details, emissions compliance, or safety inspection status. This information is crucial for law enforcement and regulatory agencies to verify that the vehicle meets necessary legal standards and is authorized for use on public roads.

While branding, denoting ownership, and aesthetics can be side benefits, they are not the fundamental reason for requiring vehicle identification stickers. Legal compliance is essential for maintaining public safety and ensuring that all vehicles on the road adhere to the rules and regulations set by governing bodies.