Estimating Emissions from Sources of Air Pollution

6.3 Estimating Emissions from Off-Road Mobile Sources

6.3.8 Forecasting Future Activity and Emissions
Projecting off-road mobile source emissions into the future requires the prediction of two components, the type of equipment that will be operating, and the amount of time the equipment will be operating. Understanding the type of equipment depends on future regulations on technologies as well as the supply and cost of various fuels. The future activity rates of various equipment types depends primarily upon future land use and population changes.