This paper develops a new quantitative airline safety index based on comparative safety performance and efforts of airlines. The index essentially indicates an airline's overall safety level, relative to other airlines in the context of safety competitiveness and risk. An empirical study of four...

This paper develops a multiobjective programming model for the optimal allocation of passenger train services on an intercity high-speed rail line without branches. Minimizing the operator's total operating cost and minimizing the passenger's total travel time loss are the two planning...