First cause , caused by Equipment. The bus is not enough for service passengers due to maintenance or broken and The bus is small makes number of seats not enough.
Second, caused becomes for Man. The Entrepreneur don’t have enough employees for service because the number of employees are low . But, the people want to use the service of Bus Tours in the same time.
Third cause is Method. There have Poor transport management make residual passengers in the Bus Tours Station and Poor traffic that make have traffic jam problems.
Final cause is Material. Material deteriorated cause danger to the passengers and empty of fuel because don't prepared oil.