Table of contents Preface 1 Dynamic behaviour of rail bridges: The train excitation 2 Design issues related to dynamic effects for high speed railway bridges in Spain 3 Dynamics of bridges under moving loads (past, present and future) 4 Experimental verifications of vibration -- and fatigue conduct of viaducts and large span bridges, crossed by high-speed trains 5 Last developments of dynamic analysis of bridges under moving train loads 6 Assessment of the dynamic response of high-speed railway bridges in interoperable lines 7 Dynamic behaviour of ballast on railway bridges 8 Dynamic analysis of structures under high speed train loads: case studies in Spain 9 Dynamic calculations of high-speed railway bridges in France -- some case studies 10 Recent advances in the understanding of bridge dynamic behaviour on The West Coast Main Line Route Modernisation Project.