Jain, who is the nodal minister on anti-pollution measures, said that depending on its success, the initiative may "go on till infinity". Buses would ply on a dedicated lane from January 1, he added.
The decision to implement the odd-even formula could be taken by the ruling AAP government as it was ready to "take risks" unlike other governments. "We cannot wait for it to be perfected", he said.
"We have spoken to DMRC. For 15 days, the metro would run on peak frequency or maximum possible frequency and run till late. Irrespective of whether there is rush or not. So that people have an alternative and autos don't overcharge," Jain said.
During the morning peak hours, stretching from 8 AM to 11 AM, trains are available every 2 minutes 18 seconds on the Yellow Line (Line 2) and every 2 minutes 30 seconds on the Blue Line (Line 3/4), two of the busiest metro corridors.
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Asked whether single woman drivers would be exempted from this restriction, Jain said, "Even I think they should be exempted" but several such exemptions are still being deliberated upon and the final blueprint will be released on or before December 25.
Jain reiterated that AAP ministers, including Chief Minister Arvind Kejriwal, would car-pool to work. "CM, Manish (Sisodia) and I went in the same car to meet Rajnath Singh. It's usual for us."
Jain said that while Bus Rapid Transport (BRT) system was a "good concept", the government decided to scrap it due to its faulty design.