Preface. Introduction an Overview. Systems. Models. Model Validation. Basic Probability and Statistics. Random Numbers and Random Variates. Discrete System Simulation. General Purpose Simulation System (GPSS). SIMSCRIPT. Simulation Experiments in Practice. Continuous System Simulation. Trends in Simulation. Index.

Computer Simulation and Modelling

Urban rail transit operation safety evaluation based on an improved CRITIC method and cloud model

This paper presents a multi-train simulator based on traction calculations for rail traffic. The simulator is developed by object-oriented methods and modular structure design and it can mainly provide three functions for users: single-train traction calculation, multi-train simulation and timetable assessment. The architecture of the simulator and multi-train movement model is first discussed in this paper. Two successive trains running on an inter-city railway line are then modeled by the simulator. The simulation results in the case study show that the computer-aided simulator can effectively analyze the sensitivity between train delays and headways.

A computer-aided multi-train simulator for rail traffic

On Integrated Train Operational Scheme Drawing-up Platform of China

A methodology for the design of sections block length on ETCS L2 railway networks

Signalling layout design is one of the keys to railway operations with fixed-block signalling system and it also carries direct effect on overall train efficiency and safety. Based on an analysis to system objectives, this paper presents an optimization model with two objectives in order to devise an efficient signalling layout scheme. Taking into account the present railway line design practices in China, the paper describes steps of the computer-based signalling layout optimisation with realcoded genetic algorithms. A computer-aided system, based on train movement simulator, has also been employed to assist the optimisation process. A case study on a practical railway line has been conducted to make comparisons between the proposed GA-based approach and the current practices. The results illustrate the improved performance of the proposed approach in reducing signal block joints and shortening minimum train service headway.

Mao Baohau BEng

Papers

Signalling Layout for Fixed-block Railway Lines with Real-coded Genetic Algorithms