Mumbai

1. Transit Capitalheld for a year

   1.5%today · the real system carries

   1.5%needed · carry yourself, for a year

   The region's existing system carries about 1.5% of all trips. Those lines are not in the pack as playable rail, so the bar is to carry that much on a network of your own.

2. Roads Unclogged

   0%today · relief before you build

   10%needed · cut in peak congestion

   Against what the region would have without your network, not against the day you started — the region grows, and holding congestion flat through growth is the harder achievement.

3. Carbon Cut

   0ttoday · net tonnes avoided today

   89,810tneeded · net tonnes of CO₂ a year

   Scaled to this metro's 4,490,480 residents at 0.02 tonnes each — roughly what moving a few percent of the region's driving onto rail saves, after the trains are charged for their own power.

4. Held the Lineheld for a year

   0%today · on time, before a train runs

   80%needed · on time · 65% satisfied · a year in surplus

   All three at once. The cheapest route to a surplus is cutting the service that produces the other two, so this is the condition that cannot be bought.

5. Within Reach

   0%today · within a walk of your stops

   10%needed · of the metro within a kilometre of a stop

   There is no playable rail to inherit, so coverage starts at nothing and the bar is the absolute one: a tenth of the metro within a walk. Two long rail lines through the core, roughly.

6. Ten Minutes Back

   0%today · cut so far

   10%needed · off the average regional commute

   Measured on every resident, including the people who never board a train — a network that takes cars off the road shortens the drive for everyone left on it. The day-one average is the model’s first solve.

Carbon Cut's bar is 0.02 net tonnes a year for each resident, floored at 20,000. Transit Capital, coverage and the commute are taken from the network you inherit: where the pack seeds operating rail, from that system's first solve; where it does not, Transit Capital uses the model's default present-day share (floored at 1% and capped at 6%) and coverage starts from nothing. The gauges' Transit Capital tick is that default either way.