Bollards as a security measure in DC

I can't believe in the Eastern Market entry ("Eastern Market DC's 150th anniversary last weekend | And my unrealized master plan for the market") I forgot to mention a key security element as part of the transportation element. Retractable bollards at key entry points to the pedestrianized area.  I did list it in the comments once I remembered.

When I ran a farmers market in the Brookland neighborhood of DC, we narrowly missed having an incident by an older man who basically said he was above the rules.

Retractable hydraulic bollards in the Liverpool pedestrian district.

I was on the Eastern Market Community Advisory Council for 13 years, and for many of those years I brought this up, because of vehicle incidents in markets world-wide.  Although the first one, in Santa Monica was not a terrorist incident at all ("Case is closed on deadly day at market," Los Angeles Times).

The killings in New Orleans ("How New Orleans failed to protect Bourbon Street from attack, block by block," Washington Post) should remind every jurisdiction that does regular street closures for events to install high quality secure retractable bollards, to provide an extra level of protection against ever increasing vehicular terrorism.