=>

1. The traffic can be a nightmare for visitors to Viet Nam for the first time.

-> nightmare ~ ác mộng

2. There are transport rules but many people don't seem really interested in following them.

-> interested in ~ thích thú, quan tâm

3. Three or four people on one motorbike is a common sight, particularly with young people.

-> common sight ~ cảnh thường thấy

4. The traffic is worst during rush hours when everyone is trying to get to work or get home quickly.

-> try to V ~ cố gắng làm gì

5. Some people ride their motorbikes on the pavements rather than waiting in a traffic jam.

-> rather than V-ing ~ hơn là, thay vì