Public transport is saver than if you use your own private vehicle. As you know, the petrol price in our country is high. It is about 30 baht per liter. The high price of petrol caused your financial problem because using personal vehicle everyday means that you have to fill up your petrol tank frequently. If you compare the price of petrol that you have to pay in a month to the price of a bus or train, you will find that public transport save your money. Moreover, taking public transport can avoid to pay something extra such as maintenance, repairing and parking.