Abstract: The latest Clean Air Act Amendments mandate that every area in the nation meet standards for six criteria pollutants—ozone, sulfur dioxide, carbon monoxide, nitrogen dioxide, lead, and particulate matter—both with an ...

Abstract: Data collection is one of the most expensive tasks in many transportation-air quality studies. Finding effective ways to minimize data collection time and cost without losing vital information is crucial. This paper presents ...

Abstract: This paper describes a new sampling approach to collect driving data. Traditional data collection assesses the percentage of vehicle miles traveled by road facility and time of day, and collects data in proportion to how ...