4. Have not resulted from radiological transportation accidents due largely to the nature of the materials transported and the use of appropriate protective packaging
In the United States, serious radiation exposures have not resulted from radiological transportation accidents due largely to the nature of the materials transported and the use of appropriate protective packaging.
Explanation:
Due to the large number of radioactive material shipments, transportation accidents are the most common type of radiation exposure in United States.
Despite more frequent happening, there has been no exposure to serious nuclear radiation caused by these accidents.
This is largely due to the nature of the radioactive material being shipped and the use of protective packages.