Is it true that ASM testing is only part of the Enhanced program area in California's smog check program?

ASM (Acceleration Simulation Mode) testing is indeed a part of the Enhanced program area in California's smog check program. The Enhanced program is designed for areas with more serious air quality issues, where more rigorous vehicle emissions testing is necessary to manage pollution levels effectively. ASM testing specifically simulates real driving conditions by measuring emissions under controlled acceleration, allowing for a thorough evaluation of a vehicle's emissions performance.

In the Enhanced program, ASM testing helps identify vehicles that may not perform well in terms of emissions under typical driving conditions. This detailed assessment is crucial in urban areas with significant air quality concerns, as it provides accurate data on how vehicles contribute to pollution. Therefore, stating that ASM testing is only part of the Enhanced program area accurately reflects its scope and application within California's smog check framework.