Torque round about dotn cause the accidents but they are deceptive at some places that is why they cant be used a lot but at selected place.

They are not recommended to be used this much and every where. This is something wrong here. The consultants designed it thinking that Doha will reamin a very small city, they were wrong, it is expanding and the highways are not smoothly flowing with cars.

Lorries as you mentioned when taking turns around round abouts can hit a vehicle, so one of the faults you have already mentioned youself.