[erispoe]

40k+ riders per month? I've been trying to get ridership data for Chariot and couldn't get anything. So it's around 2,000 riders per business day? For 30 lines?

It's really low ridership by any standard. Not even a dent in SF Muni ridership of 650,000+ daily rides. It's the equivalent of a local, infrequent Muni line you probably never heard of like the 36-Teresita or the 37-Corbett, both of which are moving around 2,000 riders a day. On a single, modest line.