The official consultation ran from 1 September 2009 to 31 October 2009. This consultation confirmed the advantages of the project even though its impact would only be further analyzed in the study's next phases. All seven variants were presented. The STIF decided to proceed with studies and consultations based on the two most appropriate proposals (no 3 and no 4), both of which included a branch toward Bondy, to analyze the consequences on the line's operations and automobile traffic. Proposals that avoided Bas-Clichy or that had longer travel times were largely rejected during the discussions. The "0" proposal, which was called historic, was rejected because of the difficulties of inserting rails on Roy Boulevard and on the former RN 3.