Article 44 of Bahrain's Traffic Law Implementing Regulation states the maximum speed for private cars inside cities, other than on ring roads, as a range rather than a single figure. What is that range?

1. 20 to 30 km/h
2. 40 to 60 km/h
3. 60 to 100 km/h
4. A single fixed limit of 50 km/h everywhere inside a city