What is the law regarding mobile telephone use while a motor vehicle is in motion in Brunei?

1. Holding and using a handheld mobile telephone while the vehicle is in motion is an offence under Cap 68
2. Handheld phone calls are allowed if driving below 30 km/h
3. Texting is permitted while stopped at red traffic signals with the engine running in traffic
4. Mobile phone use is unrestricted for drivers over 25 years old