I wrote a letter to BART today. If you believe the same, please comment here and write to BART
I notice that Powell station recently got new illuminated signage at the platform level. Its very nice and legible from inside the train.
I need to point out that the 16th and 24th street stations remain ENTIRELY indistinguishable from one another from inside the train. The stations look IDENTICAL to one another and the existing signage is hidden in shadow.
Please install signage at 16th and 24th St stations so a traveller can tell them apart.