> because there is a mechanical bridge that closes the gap No. It's because the whole thing is crazy slow. Fear of lawsuits? I don't know. The door warnings on

> because there is a mechanical bridge that closes the gap No. It's because the whole thing is crazy slow. Fear of lawsuits? I don't know. The door warnings on Caltrain, Bart, Muni are often comically offset compared to the door motions. That is, too late to be useful as legal warnings.