This standard specifies the performance requirements and tests for transportable and mobile radiation monitors that detect and identify radionuclides, and when provided, indicate the presence of neutron radiation. Transportable radiation monitors are designed to be transported to a location and used for a specific task or for a specified period of time; they do not require permanent mounting platforms; may be mounted to a vehicle such as a trailer; and are only used when the vehicle is stationary. Mobile radiation monitors are typically in operation on a platform that is in motion but that can also be used while stationary. Mobile monitors may be mounted in vehicles including, for example, trailers.