I appreciate your sentiment but sadly you’re wrong.
Read about induced demand.in traffic. A well documented phenomenon arguiing against splurging excessive money on highways, multiple lane roads, etc. They should be the ultimate policy option not the first policy option.

Here is a response generated by chatgpt because it honestly does it better than I would have explained.

Induced demand in the context of traffic refers to the phenomenon where increasing roadway capacity (such as adding more lanes to a highway) leads to a proportional increase in traffic volume, rather than relieving congestion as intended. Essentially, making it easier to drive encourages more people to do so, which eventually brings congestion back to previous levels or even worsens it.

How Induced Demand Works:

Initial Relief: When new lanes are added or roads are expanded, traffic congestion initially decreases, and travel becomes faster and more convenient.

Behavioral Change: The improved conditions incentivize drivers who might have avoided the road during peak times, used alternative routes, or opted for public transportation to now use the expanded road.

Land Use Changes: Over time, the reduced travel time encourages more development and economic activity in areas that were previously less accessible. This can lead to more people moving to these areas, thus generating more traffic.

Return to Congestion: Eventually, the increase in the number of vehicles using the road leads to a return of congestion, often to levels similar to or worse than before the expansion.

Examples:

Urban Highways: Cities that expand highways to alleviate traffic often find that within a few years, the expanded highways are as congested as they were before.

Freeway Expansions: Los Angeles, for example, has repeatedly expanded its freeway system over the decades, but the city remains one of the most congested in the world.

My opinion: Encourage your government to allocate and build more train lines (Harbor line still has 2 lines). Or add more metros.

Or even most cost-effective solution: ask to buy more buses. For 1/10th of 63,000 crore, you can buy 4000-4500 e-buses(current BMC fleet=3,000) that are of highest quality and will cater to millions.

Lastly, read about BRTS(https://en.wikipedia.org/wiki/Bus_rapid_transit) viz. Buses operate in exclusive lanes, avoiding traffic congestion and operate therefore at high speed (because dedicated lines for buses only).

A typical BRTS can cost between $1 million to $15 million per kilometer, depending on the infrastructure requirements.Metro capex can range from $50 million to $300 million per kilometer, depending on whether it is elevated, underground, or at-grade.
Suburban rail costs can vary widely from $10 million to $50 million per kilometer depending on whether it is greenfield or brownfield.

I am writing this because there are many urban planners, policy makers, civil engineers or even future urban planners that may be visiting this site. If I am able to illuminate these things, we may have hope of better shared future.