"Forging Partnerships To Reduce Diesel Emissions" (General Information On Philadelphia Diesel Difference) - Brochure (PDF - 2.2 MB).

"Recognition Program" - Brochure (PDF - 2.0 MB).

"Adopt-A-School Bus Program" - Brochure (PDF - 503 KB).

"Reducing Emissions From Idling Vehicles" (Produced by the City of Philadelphia Air Management Services) - Brochure (PDF - 507 KB).

"Diesel Retrofit and Clean Fuel Frequently Asked Questions" - Fact Sheet (PDF - 1.1 MB).