How does Virginia determine which areas require emissions testing?

Virginia determines which areas require emissions testing based on geographic areas with high levels of air pollution. This relationship is established through environmental assessments that monitor air quality. Locations suffering from high pollution levels are identified as needing stricter regulations to improve air quality and public health. Emission testing in these areas helps to reduce the amount of harmful pollutants released into the atmosphere by ensuring that vehicles are operating within acceptable emissions limits.

The other factors listed, such as vehicle type, driver's age, and vehicle sales numbers, do not directly influence the requirement for emissions testing in Virginia. Instead, testing is focused on geographic conditions that directly reflect the air quality and environmental health of the communities within the state.