DOT Glass Certification

Q. Can you tell us how to contact the US DOT concerning the DOT glass “bug certification” for city buses, school buses, etc?

A. You should contact NHTSA and FHWA. The Websites of these agencies are below.
   NHTSA: http://www.nhtsa.dot.gov/
  FHWA: http://www.fhwa.dot.gov/