The authors briefed on the research results and their application of coupler, retarder and braking system of extended passenger train consist, which is included in one of the state key S&T projects in the Seventh-Five rear Plan Period-Studies on Key Passenger Operation Technology and Equipment.

Analysis on composition and pollution of garbage in railway passenger trains;

Efficacy of different methods for killing cockroach on different type passenger train;

Investigation on virus-carrying rate of hemorrhagic fever with renal syndrome in passenger train;

Index Evaluating System on seats allotment of passenger trains based on AHP;

The basic removal coefficient and additional removal coefficient of speedup passenger trains on single railway lines are analyzed by taking HankouDanjiangkou railway line as the background.

Raising the speed of passenger trains will change the speed difference between passenger and freight trains, resulting in changes in the removal coefficient of the passenger trains and the passing capacity on a nonparalleled train diagram.