In Vietnam, people travel for many reasons and during travelling, they often use a variety of vehicles. For example, people who travel within the country often choose fast transport like planes or coaches; people who travel to work often choose bike if it's a short distance, they would prefer car if it's far from their house to work. However, due to overpopulation and people use transportation individually, there are many traffic jam in Viet Nam. In my opinion, there are many ways to improve the traffic situation in Viet Nam. The most effective way is to encourage people to use public transport like bus more. However, the bus is very crowded and slow; if the government invest money in making a subway, it will not only reduce energy, time and the traffic jam in Viet Nam.