Article 44 of Bahrain's Traffic Law Implementing Regulation sets speed bands for 'other vehicles', the class that includes heavy goods vehicles, separately from private cars. What are the maximum bands for those other vehicles?

1. The same as private cars in every location
2. 30 to 50 km/h inside cities other than on ring roads, and 50 to 80 km/h outside cities and on ring roads
3. A single national maximum of 120 km/h
4. No maximum applies to goods vehicles; only a minimum speed is set