Open Procedure Pursuant To Art. 71 Paragraph 3 Of Legislative Decree 36/2023, Carried Out Electronically Pursuant To Art. 25 Legislative Decree 36/2023, For The Assignment, Through A Framework Agreement With A Single Operator Pursuant To Art. 59 Paragraph 3 Of The Legislative Decree. 36/2023, Of The Ordinary And Extraordinary Maintenance Service Of The Gaia S.P.A. Vehicle Fleet.