Which type of vehicles requires a BAR referee emissions label before a smog check inspection?

For a smog check inspection, specially constructed vehicles (SPCN) and grey market vehicles require a BAR referee emissions label as they often do not conform to standard emissions specifications. This label is critical because it verifies that the vehicle has undergone an emissions compliance process specific to its unique construction or market origin.

Specially constructed vehicles may include custom-built or modified cars that do not fit standard category definitions, which can complicate their emissions compliance. Grey market vehicles are imported vehicles that do not meet U.S. emissions standards and require a separate assessment to determine their compliance with California regulations.

Obtaining a BAR referee emissions label for these vehicles confirms that they have been inspected and approved by a Bureau of Automotive Repair referee, ensuring that their emissions systems meet state requirements. This requirement is essential to maintain environmental standards and facilitate the registration and smog check process for these unique vehicle categories.

In contrast, initial registration for out-of-state vehicles may necessitate a smog check, but not necessarily a BAR referee emissions label unless the vehicle falls under special categories. Heavy duty vehicles over 14,000 pounds GVWR also have their own regulations and testing requirements but are not universally required to possess a BAR referee emissions label for inspection. Therefore, the focus on specially