Why focus on school campuses?
Large numbers of vehicles idle on school campuses during daily arrival and dismissal. Students, parents, faculty, and bus drivers are exposed to higher levels of vehicle exhaust at these times. Exhaust may also be drawn into the air vents and accumulate inside the school building.
Children are more sensitive to air pollution than adults because they breathe more (relative to body size) and their lungs are still developing. Pollution from vehicle exhaust has been linked to asthma and other respiratory diseases, and increased risk of long-term health effects. Asthma is a common chronic illness in children and a significant cause of school absences.