What is the legal restriction on the use of mobile phones while driving in Bosnia and Herzegovina under ZOBS BiH?

1. The driver may not use a handheld mobile phone while the vehicle is in motion; hands-free devices are permitted if they do not impair driving ability
2. Drivers may use handheld phones only while driving in built-up areas below 50 km/h
3. Mobile phone use is completely permitted if the driver holds the steering wheel with one hand
4. Texting is allowed if the vehicle is equipped with an automatic transmission