Building Round about is required where multiple roads join at one place. Perfect example in Visakhapatnam is Assilmetta at Vemana Mandir (Opp Bombay Gas Light store). 4 exits and 4 entry in one place. By providing a round about at Vemana Mandir lot of traffic pressure can be reduced at Assilmetta and Siripuram junctions.
Main roads anyway they are crowded. The sub-ways are always parked with vehicles. While approving house plans, they should insist for car parking also included in that plan. So that in future cars will not be parked on the roads. In many streets the house owners leave their cars outside the building, while they use public transport.