While aboard Caltrain Wednesday evening, I was slicing away with my pocket knife at some duct tape on my bike when I wondered, “Are pocket knives legal on public transit?”
First a big disclaimer: I am not a lawyer. But here’s what I’ve found out about the kind of small knives you’ll find your typical bicycle multitool.
In California, it’s legal to carry (concealed or openly) a pocket knife. It’s up to you to find out if your local jurisdiction has stricter controls.
Some states and municipalities have a restriction against carrying concealed “deadly weapons.” A handful of cities have code prohibiting the carry of “any knife” on board a bus or in a transit center, but they generally have wording to the effect of “intended for use as a weapon.” IANAL, but I don’t imagine small multitool blades fall into that category.