“8 to 30 foot steel bollards, with the flat plate at the top”
I liked the design where the top was wider than the wall, and rounded.
“I liked the design where the top was wider than the wall, and rounded.”
So did President Trump. That, and the see-through feature were his only publicized comment on specific designs when he visited the prototypes. Apparently, they performed well in the testing. Maybe next year, we will start to see some of that barrel top installed.