What must be used when placing an inspection sticker on a vehicle from an emissions area?

When placing an inspection sticker on a vehicle from an emissions area, it is essential to use an emissions insert. This insert is critical because it indicates compliance with emissions regulations and is specifically meant for vehicles that fall under the jurisdiction of emissions testing requirements. The insert serves as an additional indicator that the vehicle has passed both safety and emissions inspections, helping to ensure that used vehicles meet environmental standards.

Additionally, the use of a standard inspection sticker without the emissions insert would not provide the necessary information about the vehicle’s emissions compliance, which could lead to regulatory issues for both the vehicle owner and the inspecting facility. A temporary sticker is typically used in different contexts, such as for vehicles that are pending full inspection or registration, and doesn't apply here. Therefore, the emissions insert is the correct choice and fulfills the legal requirements in emissions-designated areas.