Firstly, Thailand Road Safety Observatory and Safety Road Watch (2010) found that there are several reasons for people who not wearing helmets such as to ride the motorcycle in short distances, to hurry, to feel uncomfortable, to use helmet mess up hair, to have no place for storing the helmet in motorcycle, and to ignore the weak laws. Next, the campaign in 2011 “the year of campaign wearing helmets 100 percentage” aimed to increase the number of wearing helmets during driving the motorcycles.