I am disappointed to see the removal of the roundabouts of Dhaka city. It is much more than removing a few beautiful full-grown trees and a fountain. Here we have gone one step backward in traffic management. Traffic roundabouts everywhere are easy solutions to handle heavy traffic concentration without any police. But you have to discipline the vehicle drivers and the road users. Believe me this amount of discipline is there; just drive through the Dhaka Cantonment and you will see in five minutes how civilised the vehicles can be (for five minute only). So just requesting the military police (if there is no other alternative) to control the ring roads for a few months and then leaving them in the hands of a few trained personnel to monitor it, could solve the problem. All at a fraction of the cost involved in doing what they did.Of course, slight improvement of the ring roads set-up is necessary. Remove the rickshaws, put up symbolic signs as to how to behave on the ring, put lane markings, define your and others' right of way, ('give way to traffic from your right') etc. Distribute leaflets, let everybody know that trained officers will be placed at those points, after a date, to catch you and make you pay heavy fines. Even the indifferent (and illiterate) drivers will get the message, I bet. (There are hundreds of roundabouts in Paris; one of these has 13 lanes and 13 entry/exits).
Please reinforce some discipline in the minds of the road users and stop deploying untrained police personnel (ten of them per crossing).