This partcular stretch of road in Bangalore was always two-way. Then sometime in mid-last decade it was made one way because of the huge volume of traffic. Traffic could flow only from Ulsoor to Trinity circle.
That became quite a pain for lots of people who stay near Ulsoor market. They had to take a long detour via Gurudwara and Murphy Town to reach their destination.
Then everyone put up with it as an inevitable compromise for Bangalore's development. Now after a long time the stretch is again two way much to the relef of many people of the area.