Class I-Carriers having average annual gross transportation operating revenues (including interstate and intrastate) of $5 million or more from passenger motor carrier operations after applying the revenue deflator formula as shown in the Note.
Class II-Carriers having average annual gross transportation operating revenues (including interstate or intrastate) of less than $5 million from passenger motor carrier operations after applying the revenue deflator formula as shown in the Note.
49 C.F.R. §369.3
Each carrier's operating revenues will be deflated annually using the Producer Price Index (PPI) of Finished Goods before comparing them with the dollar revenue limits prescribed in paragraph (a) of this section. The PPI is published monthly by the Bureau of Labor Statistics. The formula to be applied is as follows: