As you all should remember the closest Metro Line B station is Laurentina station (terminal). From there to INGV you can take bus line number 765 (leaving every 20 min from bus terminals behind the Metro station) and get down after 9 bus stops (the Institute is visible on the left side and reported as bus stop name).
Moreover we are planning a mini bus shuttle service from Laurentina Metro Line B station, for those that would like to come to the Institute leaving from Laurentina station at the following time schedule:
The mini bus will be recognizable by the INGV logo
The Local Organizing Committee