A new report from the Transportation Security Administration (TSA) warns that truck owners and truck rental companies must be vigilant and guard against Muslim terrorists seeking to hijack their vehicles in order to carry out ramming strikes.

“No community, large or small, rural or urban, is immune to attacks of this kind by organized or ‘lone wolf’ terrorists,” the report states.

The report, titled “Vehicle ramming attacks: Threat landscape, indicators and counter measures,” comes in the wake of a number of high-profile ramming attacks by so-called “lone-wolf” Islamist terrorists.

In the past three years at least 173 people have been killed and over 700 wounded in 17 ramming attacks globally, the report notes. Just over half of the fatalities occurred in the Bastille Day attack in Nice, France, last summer.

Barely six weeks ago, Islamic terrorist Khalid Masood drove a Hyundai Tucson into a crowd of people on Westminster Bridge in London before trying to crash through barriers surrounding the Houses of Parliament, killing five and injuring nearly 50 others.

The report makes it clear that these attacks have been occurring with increasing frequency. Nine of the 17 attacks occurred in the past 10 months. The most recent was on April 7 in Stockholm, Sweden, when Uzbeki ISIS terrorist Rakhmat Akilov drove a hijacked truck into crowds on one of the city’s main pedestrian streets. Five people were killed.

The TSA report also warns that locations where “large numbers of people congregate, including parades and other celebratory gatherings, sporting events, entertainment venues, or shopping centers,” are particularly vulnerable.

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The report also suggested that owners and operators of larger commercial vehicles should be particularly vigilant, despite the fact that only four of the 17 attacks used such large trucks.

“Commercial vehicles — distinguished by their large size, weight, and carrying capacity — present an especially attractive mechanism for vehicle ramming attacks because of the ease with which they can penetrate security barriers and the large-scale damage they can inflict on people and infrastructure.”