This being a measure voted in a newly created special district that spans across 6 counties, the Metropolitan Transportation Commission (MTC) is hosting its own web page to keep track of the votes on the measure.

The measure requires a simple majority (> 50%) of votes to pass.

So far, things look positive for the measure passing across all counties, well over 50% in every county,

As of the time of writing, the lowest being Santa Clara County with 53.82% Yes, the highest being San Francisco with 77.7% Yes.

I think it's gonna pass.