U.S. Nuclear Regulatory Commission
Question 36: Part 20 requires that "labelled packages" be monitored. Is it correct to assume that only packages with White I, Yellow II, or Yellow III labels must be monitored, and that marked packages (LSA or radioactive markings) are not required to be monitored?
Answer: Yes. Based on the statement of considerations, it is correct to assume that only packages with DOT White I, Yellow II or Yellow III labels need to be monitored.
(Reference: 10 CFR 20.1906 (b) (1))