On September 4, 2013 Mr.Niyom Pontisaeng and Mr.Wongkitikorn Pinrat driver of trailer no. 812
had been assigned from Laemchabang yard 9 units transport to Surin and Sisaket dealer.
Mr.Wongkitikorn was driving the trailer out of Leamchabang at 18.30 pm and change Mr.Niyom drove
bypass Saraburi at 23.45 pm until Nongki to chang Mr.Wonkitikorn he drove at 05.02 am. Then, when
to dealer both drivers are unloading cargo 2 units off trailer and transport cargo to Sisaket dealer by
Mr.Niyom was driving. When both drivers transport cargo successfully. While travelling back Mr.Niyom
drove trailer to Km.226 before crossroad Sangkha about 17 Km. he was doze off. Cause the trailer
down to wayside. When he awake so tried to the steering wheel trailer but underneath the structure
of truck trailer adjacent to the access road to the village. As a result, the trailer has been damaged.