California BAR Smog Technician Practice Exam 2026 – Complete Study Resource

The key idea is that the BAR-97 EIS stays inside the station during use, but it can be connected to a heavy-duty vehicle that is located outside. This arrangement keeps the equipment protected and tested in a controlled indoor environment while still allowing the vehicle, which may be outside for exhaust testing, to be hooked up to the EIS. Therefore, the guideline is that it cannot be used outside the station building, but it may be connected to a large vehicle located outside. The other options don’t fit because they imply either using the equipment outside or prohibiting any connection to a vehicle, which isn’t how the procedure is designed.