For a non-exclusive-use vehicle carrying Class 7 packages, the combined transport index may not exceed:
Correct answer: C – 50
Federal hazardous-materials rules limit the total transport index in a non-exclusive-use transport vehicle to 50. The total is calculated by adding the transport-index numbers on the individual packages and overpacks. The 50 limit does not apply to the exclusive-use shipments specifically identified in the regulation.
Source: Pennsylvania Commercial Driver’s License Manual — § 9.4, “Class 7 (Radioactive) Materials”, 49 CFR § 177.842(a) – Class 7 (radioactive) material

