page_title: Radiation Portal Monitor
hierarchical_section_title: Radiation Portal Monitor
caption_attribution_description: Nevada National Security Site. Radiological Nuclear Countermeasures Test and Evaluation Complex. Truck driving through the Depart of Homeland Security, Portal Monitor Test Area at the Nevada Test Site.
context_page_description: Radiation Portal Monitors are passive radiation detection devices used for the screening of individuals, vehicles, cargo or other vectors for detection of illicit sources such as at borders or secure facilities. Fear of terrorist attacks with radiological weapons spurred RPM deployment for cargo scanning since 9/11, particularly in the United States.
context_section_description: Radiation Portal Monitors (RPMs) are passive radiation detection devices used for the screening of individuals, vehicles, cargo or other vectors for detection of illicit sources such as at borders or secure facilities. Fear of terrorist attacks with radiological weapons spurred RPM deployment for cargo scanning since 9/11, particularly in the United States.
caption: Truck driving through the Radiation Portal Monitor Test Area at the Nevada National Security Site.
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