As far as I can find out, the SF MTA is spending ~1.5% (under $20*10^6 annually) of its budget on cycling infrastructure [0]. According to the SFMTA, bicycle us

As far as I can find out, the SF MTA is spending ~1.5% (under $20*10^6 annually) of its budget on cycling infrastructure [0]. According to the SFMTA, bicycle usage is at around 3.9%[1], up from 2.3% in relative numbers. Up almost 200% in absolute numbers from 2006 (~4000 counted versus >11000 counted). Shifting even tiny numbers of people from cars to bicycles shaves off peaks of car traffic. Bicycle throughput is several times higher per unit of infrastructure. That has incredible potential to hugely benefit people driving cars by improving car traffic flow. Crazy high ROI potentially! According to your logic too, one could argue that only devoting 1.5% of the transport budget to the mode used by 3.9% of its population is serious underfunding. [0] https://blog.sfgate.com/bicycle/2014/04/21/new-sfmta-budget-a-qualified-win-for-bicycle-infrastructure/ https://blog.sfgate.com/bicycle/2014/04/21/new-sfmta-budget-... [1] https://www.sfmta.com/bicycle-ridership-data https://www.sfmta.com/bicycle-ridership-data