Developments in Risk-based Approaches to Safety contains the invited papers presented at the Fourteenth annual Safety-critical Systems Symposium, held at Bristol, UK in February 2006. The papers included in this volume address the most critical topics in the field of safety-critical systems. The focus this year, considered from various perspectives, is on recent developments in risk-based approaches. Subjects discussed include innovation in risk analysis, management risk, the safety case, software safety, language development and the creation of systems for complex control functions. Papers provide a mix of industrial experience and academic research results and are presented under the headings: Tutorial, New Approaches to Risk Assessment, Experience of Developing Safety Cases, Management Influence on Safety, Software Safety, New Technologies in Safety-critical Systems, Adding Dimensions to Safety Cases.