The Editorial Board of the Accident Analysis & Prevention organised with great success the 2nd International Symposium on Accident Analysis & Prevention (ISAAP2021), which was held online, on 29 November 2021. The Symposium principally focused on the road safety under the environment of intelligent connected vehicles (ICVs) and approximately 300 attendees participated from twenty different countries. All videos, posters, and related publications are available.  pdf5