This usually signifies a document from Radio Access Network Working Group 2 (RAN2), which handles Radio Interface Architecture and Protocols.
FTA-Report-No-0221 , a 2022 document by the Federal Transit Administration regarding rail transit agency accident investigations. 0221 rar
The .rar format is frequently used for "Inbox" submissions where delegates upload draft papers before they are officially numbered or finalized for a meeting. Potential Non-Technical Matches This usually signifies a document from Radio Access
Variance Permit No. 7913-0221-01 , a document from the City of Surrey regarding zoning by-laws. 0221 rar