Question: can you inform me how that is possible to travel from Quetta to Iran, by bus or train ? I want to know which one is safe as I am traveling with my family. Thank you for the answer!
Answer: The road between Pakistan and Iran is well guarded. Great number of Pakistani pilgrims as well as the great number of European overlanders who cross this border travel on this route. It is a long time (many years) there is no report of anyone being harmed on this route. The bus service would suit you, it takes about 15 hours to reach Taftan from Quetta.
If you are traveling with a car you can think about getting the carnet de passage at the border. Read the overlander reviews of crossing border into Iran.