See leading note (below) from earlier discussion, and also the attached files on corridor detailing, and signal cycle times.

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Exclusive bus lanes might not be necessary on old Airport rd because :

a) A large initial section (from Command hosp to Domlur) is without intersections & is also devoid of commercial activities (almost negligible number of pedestrians); &

b) The stretch almost upto Marathalli is free of parked vehciles.

A DPR has already been ready to make the road "signal free", but since it involves lot of land that has to be acquired at almost all signal intersections, it might never get done or be done in patches.

Bus priorities would be far more easier to build since it would require minimal land & also, not cause too much disruption. Features necessary are (being reproduced from previous blog) :

a) 4.5m uni-directional bus only underpasses (i/o 2 lane, 7.5m) at Hosmat hospital jn, ASC centre jn, Command hospital jn & Namjoshi rd.

b) 7.5m bi-directional bus only underpasses (i/o 4 lane, 15.0m) at Manipal hospital jn, Wind tunnel rd jn & Suranjandas rd jn.

c) At Lower Agaram rd jn, the proposed all-traffic underpass /flyovers may be built as planned & will not effect bus movement as the jn will become signal free for all traffic.

d) At Domlur bus stand, a 2-lane, 7.5m bi-directional flyover can be built (i/o 4-lane 15.0m flyover).

e) At Kundalahalli gate, a 4.5m uni-directional bus only overpass would be required (i/o 4 lane, 15.0m underpass) for buses headed towards city from ITPB.

To facilitate safe /unhindered entry & exit of buses from underpasses /overpasses, barricades over a short length would be necessary both ways. Misuse can be prevented with sensors fitted on buses that open boom barriers at entry.

Additionally, a 1 km long two-lane (7.5m) overpass to bypass the congestion at Marathalli (incldg the intersection signal) is necessary here since the signal delay is considerable.