What does the transport index indicate?

The transport index is a crucial measurement in the field of radiation safety, specifically concerning the transport of radioactive materials. It indicates the maximum radiation level that can be expected at a distance of 1 meter from the surface of a package containing radioactive material. This measurement helps ensure that individuals handling or transporting the package can do so safely, as it provides a clear guideline regarding the potential exposure to radiation near the package.

By specifying the radiation level at this particular distance, the transport index plays an essential role in determining appropriate safety measures and protocols during transportation. The correct answer highlights this important aspect of radiation safety, as it serves as an indicator of how safely the package can be handled based on its radioactivity. Understanding and utilizing the transport index is vital for maintaining safe practices in the transportation of radioactive materials while minimizing radiation exposure to personnel and the public.