"data sharing." . . . . . . . . . . . . . . "Identification of liability-related impediments to sharing [statute symbol]409 safety data among transportation agencies and a synthesis of best practices"@en . . "Statistics"@en . . . . . . "TRB's National Cooperative Highway Research Program (NCHRP) Research Results Digest 306: Identification of Liability-Related Impediments to Sharing [statute symbol] 409 Safety Data among Transportation Agencies and a Synthesis of Best Practices examines liability risks associated with sharing safety data among transportation agencies pursuant to Section 409 of Title 23, U.S.C. The report also explores best practices; reviews the Pierce County, Washington v. Guillen decision and its potential impact on managing state liability risk; and describes potential strategies for overcoming the impediments to data sharing, specifically those related to liability. The appendixes to NCHRP Research Results Digest 306 was published as NCHRP Web-Only Document 89."@en . . . . . . . "\"This digest presents the results of NCHRP Project 8-54, \"Identificaiton of liability-related impediments [section]409 safety data among transportation agencies and s synthesis of best practices.\" The research project was conducted by Cambridge Systematics, Inc., with support from the American Automobile Association.\""@en . . . "liability." . .