*white smoke*
We have bollards! Habemos Bollards!
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A couple of observations: if they could do bollards in this central section  where the road above the subway station is the most shallow, then why install shin breaking concrete blocks everywhere else?
Like the concrete blocks, the bollards are far too closely spaced. Is there a 70cm wide car they’re worried about? All of the “anti-terror” infrastructure here seems not to be aimed at a functional and safe pedestrian plaza, but instead designed to pad contractor budgets.