Agree with you there is less taxis in Qatar. But have not the feel its insufficient inside Doha atleast. You can see many green cabs, but no one will not stop at you. If there is 3-4 cabs are in a stretch.. even though nobody will turn your side. No idea where they are going!!

How many minutes a person can stay waiting for a taxi under the sun on this climate even its in a shade or not.

There is no wonder the dramatic increase of private taxis'. Sure its a business, driving private taxis' and know many making more than 200Qrs/day after all expenses.

Legal taxis'
1. The driver should like the outlook of the pax
2. The pax should be a person needs to travel more distance
3. The pax needs to be the driver friendly
4. Even recent past found a few, driving without putting meter (Al Million)
5. Ladies friendly.

Private Taxi
1. agree the tariff, go anywhere. No demands..!! Completely at your service.