@inbook{df87c6a389204d3ebffd0b299ae31d4c,
title = "Protection: Defensible spaces",
abstract = "In this chapter, I discuss passive and mostly {\textquoteleft}low-tech{\textquoteright} defences in the shape of barricades (i.e. counter-intrusion devices) and citadels (i.e. facilities hardened against terrorist or criminal attacks). After all, in my opinion, these modern avatars of time-honoured brick-and-mortar curtain walls still have a formidable role to play in the times of global terrorism: basically, they are our last line of defence against terrorists who have managed to evade all other high-tech measures described above without being detected and are now ready to strike. Hence, I will take a look at modern city walls such as the City of London{\textquoteright}s {\textquoteleft}Ring of Steel{\textquoteright}/Ring of Glass{\textquoteright}, at modern citadels such as One World Trade Center in New York, and at barricades (temporarily) deployed to deny access to certain areas.",
keywords = "Barricades, Bollards, Citadels, City wall, Public Space, Residential communities, Ring of glass, Ring of plastic, Ring of steel",
author = "Peter Lehr",
note = "Publisher Copyright: {\textcopyright} Springer International Publishing AG, part of Springer Nature 2019.",
year = "2019",
doi = "10.1007/978-3-319-90924-0_9",
language = "English",
series = "Advanced Sciences and Technologies for Security Applications",
publisher = "Springer",
pages = "131--142",
booktitle = "Advanced Sciences and Technologies for Security Applications",
address = "Netherlands",
}
