E-bikes aren't such a dangerous scourge as cars. The priority should be on implementing real safety measures, not putting up signs. It's silly that NYSE is protected like a fortress even though nothing important happens there any more but vulnerable paths are left wide open.

NYSE isn't protected because it's important. NYSE is protected because it's perceived to be important; i.e., it's a high-profile terror target. Whether or not NYSE is actually important, is of secondary importance.

The same reason that public-facing corporate websites often receive more security attention than the actually-important internal network.

(e. conclusion: the recent trend of weaponizing automobiles may be a huge win for pedestrian/cyclist safety... :-\)