Ease According to the U.S.
Federal Bureau of Investigation, the tactic has gained popularity because "Vehicle ramming offers terrorists with limited access to explosives or weapons an opportunity to conduct a homeland attack with minimal prior training or experience."
Islamic terrorism Counterterrorism researcher
Daveed Gartenstein-Ross of the
Foundation for Defense of Democracies told
Slate that the tactic has been on the rise in
Israel because, "
the security barrier is fairly effective, which makes it hard to get bombs into the country." In 2010,
Inspire, the online, English-language magazine produced by
al-Qaeda in the Arabian Peninsula urged
Mujahideen to choose "pedestrian only" locations and make sure to gain speed before ramming their vehicles into the crowd in order to "achieve maximum carnage". Writing for
The Daily Beast, Jacob Siegel suggests that the perpetrator of
the 2014 Couture-Rouleau attack may be "the kind of terrorist the West could be seeing a lot more of in the future", a kind that he describes, following Brian Jenkins of the
Rand Corporation, as "stray dogs", rather than
lone wolves, characterizing them as "misfits" who are "moved from seething anger to spontaneous deadly action" by exposure to
Islamist propaganda. A 2014 propaganda video by
ISIL encouraged French sympathizers to use cars to run down civilians. According to
Clint Watts, of the
Foreign Policy Research Institute, where he is a senior fellow and expert on terrorism, the older model where members of groups like
al-Qaeda would "plan and train together before going to carry out an attack, became defunct around 2005", due to increased surveillance by Western security agencies. For authorities in Western countries, the difficulty is that even in a case like that of the perpetrator of the 2014 Couture-Rouleau attack, where Canadian police had identified the attacker, taken away his passport, and were working with his family and community to steer him away from
jihad, vehicle attacks can be hard to prevent because, "it's very difficult to know exactly what an individual is planning to do before a crime is committed. We cannot arrest someone for thinking radical thoughts; it's not a crime in Canada." According to
Stratfor, the American global intelligence firm, "while not thus far as deadly as
suicide bombing", this tactic could prove more difficult to prevent. No single group has claimed responsibility for the incidents. Experts see a saving grace in the ignorance and incompetence of most lone-wolf terrorists, who often manage to murder very few people. In the 2017
Charlottesville car attack,
white supremacist James Alex Fields Jr. rammed into counter-protestors during the
Unite the Right rally, killing one woman and injuring 35 others. ==Protective measures==