Road network operations combine a complex set of traffic management and user support actions to optimize traffic conditions in all circumstances. The knowledge in this area has been organized in the form of an electronic encyclopaedia that can be accessed on the PIARC website at: https://rno-its.piarc.org/

This website describes the actions that make up road operations. It provides an update of the PIARC Handbook on Network Operations published in 2003. It includes a comprehensive library of documents: technical notes, case studies, notes on policies and strategies implemented in different countries, reference documents and various presentations from various conferences.