This book presents state-of-the-art research results in the area of formal methods for real-time and fault-tolerant systems. The papers consider problems and solutions in safety-critical system design and examine how wellthe use of formal techniques for design, analysis and verification serves in relating theory to practical realities.The book contains papers on real-time and fault-tolerance issues. Formal logic, process algebra, and action/event models are applied:- to specify and model qualitative and quantitative real-time and fault-tolerant behavior,- to analyze timeliness requirements and consequences of faulthypotheses,- to verify prools and program code,- to formulate formal frameworks for development of real-time and fault-tolerant systems,- to formulate semantics of languages.The integration and cross-fertilization of real-time and fault-tolerance issues have brought newinsights in recent years, and these are presented in this book.