Here is a short description of what it takes to file the necessary paperwork to run for the BART Board of Directors in District 7 if you live in Alameda county. San Francisco and Contra Costa counties should have similar processes considering all the departments report to the Secretary of State.
Overall the process to signup for to run in the election took a total of 2 hours and did not cost money. This can't be the reason more people don't run for office.
For the sake of transparency, here are the documents I filled out.
What you'll find.
This blog is a raw dump of information about how to create the worlds best mass transit system in the Bay Area.