CD-3314 (140-0538) Traffic Safety Faxback Doc. # 7199 Do not wear headphones while operating a motor vehicle or riding a bicycle. This can create a traffic hazard and is illegal in some areas. Even though some headphones are designed to let you hear some outside sounds when listening at normal volume levels, they still present a traffic hazard and are illegal in some areas. (CJD/all-07/19/94)