Which areas in California do not require ASM loaded-mode inspections?

• A. Basic and Change of Ownership areas.
• B. All commercial vehicle inspection zones.
• C. High altitude regions with emissions concerns.
• D. Urban areas with high traffic.

Answer: (A)

The test design varies by area, using the more demanding loaded-mode procedure only where there’s a higher emissions risk or where the test needs to simulate real driving under load. Basic testing areas and Change of Ownership areas don’t require the ASM loaded-mode inspection because they rely on the standard, less intensive emissions checks used for routine compliance during vehicle transfers. In contrast, zones with commercial vehicle inspections or areas marked for higher emissions risk typically mandate the loaded-mode test to ensure accurate readings under load. So, those two areas are the ones where the loaded-mode inspection isn’t required.