The Tangenziale di Bologna ("Bologna ring road") or Raccordo autostradale 1 (RA 1; "Motorway connection 1") is an autostrada (Italian for "motorway") long in Italy located in the region of Emilia-Romagna serving the urban area of Bologna.
It runs parallel to Autostrada A14 from Casalecchio di Reno, west of Bologna, to San Lazzaro di Savena, east of Bologna.
It was projected by engineers Francesco Fantoni and Giorgio Mondini; construction works lasted three years, and the infrastructure was inaugurated on 12 July 1967.