1 Examples include the Post Processor for Air Quality (PPAQ) model developed by Garmen Associates for the New Jersey DOT, and the Surface Transportation Efficiency Analysis Model (STEAM) developed by FHWA. 2 These rates are meant to represent emissions from a typical driving cycle performed at a given average speed, rather than operation of the vehicle at a constant speed. 3 ROG (reactive organic gases) is similar to VOC (volatile organic compounds). -Back- |