The student in Khon Kaen University while riding the motorcycles are usually not wearing the helmet. Not wearing the helmet it is infract a law which was caused by the student don’t have a discipline , not obey by the traffic regulation and don’t have a conscience. Which ride the motorcycle without the helmet is illegal because law requires all motorcycle riders and passengers to wear a motorcycle helmet. If the violation or failure to comply is punishable by a fine ranging from 500-1000 baht. Doesn’t obey the law is bad thing we need to find a solution for this problem to improve behavior of student in KKU.