Interesting article in today's San Jose Mercury:
"http://www.mercurynews.com/ci_9452185?source=most_emailed"

"The problem is more acute on Caltrain, where one in 15 riders wants to
bring a bike on board, according to a Caltrain survey. Three in five say
they've been bumped from crowded trains at least once in the past year,
and one in four former riders who used bikes said being bumped is why
they no longer take the train."

Of course there's a very simple solution--buy a folding bicycle and take
it on board. You can buy a folding bicycle that's good enough for rides
to and from the train station for $200 or so, i.e. the Dahon Yeah,
"http://www.campingworld.com/browse/skus/index.cfm?skunum=32200&src=SRQB".