The XXIII Conference of the Italian Society of Transport Economics and Logistics (SIET) (www.sietitalia.org) will be held online on September 30th – October 1st 2021.The title of the Conference is “Resilience, Innovation and Behaviour Change in Transport”. The deadline for submitting an abstract is April, 30th, 2021. For more information please visit http://www.trelab.it/siet2021/.