Overview
- IISc’s Sustainable Transportation Lab presented a technical assessment on Sunday, June 28, and has submitted the report to the Ministry of Housing and Urban Affairs for review.
- The study models 2041 outcomes and estimates Phase‑3 daily metro ridership would fall from 8.09 lakh to 7.98 lakh passengers if double‑decker roads are added alongside the metro.
- Mode‑share shifts projected by 2041 include a 6.4% drop in bus use and a 1.4% drop in metro use, with car trips up 3.8%, two‑wheelers up 1.28%, and auto/taxi trips up 2.8%, reflecting induced demand toward private vehicles.
- Environmental and fuel impacts quantified include an extra 17,012 kg of CO2 per day, increases in CO, NOx, HC and PM2.5, more than 7,000 litres of extra fuel use daily and an added fuel cost of about ₹6.45 lakh per day.
- The report says adding double‑deckers would raise BMRCL capital costs by about ₹2,863.53 crore, cut project returns (EIRR for the double‑decker component 9.07% and overall 5.43%), and violate Bengaluru’s approved mobility plan, creating legal and institutional risks for implementation.