Hiyari-Hatto, initiated in Japan, is a traffic psychological method to encourage road users to
participate/involve in the traffic safety program in order to elicit information through their
expression of potential accident experiences that almost occurred/caused them dead or injured.
This method was originally utilized for the sake of elderly peoples’ traffic safety which
currently becomes broader used to raise traffic safety awareness among schools, NGOs, local
communities, etc., in Japan. This public participation activity through Hiyari-Hatto marks a
quantum leap towards the substantial reduction of road traffic accidents. Recently, there are
Hiyari maps developed by local community available on the Website (e.g., Kamagaya City,
Chiba Prefecture). Figure 3 shows the local residents’ drawing how their accidents occurred,
Figure 4 represents Hiyari map or potential black spots at Kamagaya City and Figure 5
indicates name of places where Hiyari-Hatto occurred respectively. This method provides
opportunity to researchers to collect valuable data on road safety through a participation of
public on the expression of their Hiyari-Hatto which helps significantly to identify the
potential black spot locations prior to traffic accident occurrence. Note that the remedial
measures on road traffic accident causations can be derived from this technique as well. This
Hiyari-Hatto method seems applicable to investigate road safety situation in Thailand.