An example of the bollards installed on the Hudson River Greenway following a terrorist attack.
The most conspicuous signs of the deadliest terrorist attack in New York City since 9/11 are the bollards and other barriers along the busiest bike path in the country. [ more › ]
https://gothamist.com/news/security-measures-on-hudson-river-greenway-serve-as-reminder-of-terror-attack