The World Road Association – PIARC recently published a DataBook of Roads and Road Transport for 2020-2023. This report focuses on the collection of various data related to roads, road transport and safety which are internationally comparable with their accuracy and consistency ensured. The results of the data synthesis of roads/road transport and some kinds of basic data are graphically represented and must be informative for PIARC members. Also included is a summary of the work of PIARC presented as conclusions.