When you use public transportation, it is important that you only use cyclos (pedicabs) which are associated with hotels or restaurants. That way, you can be sure not to fall victim to robbers or kidnappers. Airport taxis (noi bai taxi) or official vehicles which are provided by your hotel are generally safe. In Hanoi or Ho Chi Minh City, the same rules apply as in any other city around the world: Be cautious and use your common sense.