ATSSA launches new sign retroreflectivity course ATSSA launches new sign retroreflectivity course Leader in roadway safety infrastructure industry offers online training for sign inspectors Anonym / Thursday, September 19, 2019 0 8316 Article rating: No rating FREDERICKSBURG, Va. (September 13, 2019) – The American Traffic Safety Services Association (ATSSA) launched the Retroreflectivity for Sign Inspectors course, which is available in an online training format. Read more