TRB’s Transportation Research Circular E-C111, Integrating Roadway, Traffic, and Crash Data: A Peer Exchange is the proceedings of a November 1-2, 2006, meeting held in Washington, D.C. The peer exchange was designed to bring both data and highway safety professionals together to share experiences and identify key issues relating to integrating roadway, traffic, and crash data sources used to support safety management. The exchange was also designed to introduce asset management concepts into the highway safety management arena.