document: Development of railway VR safety simulation system Abnormal conditions occur in railway transportation due to trouble or accidents and it affects a number of passengers . It is very important , therefore , to quickly recover and return to normal train operation . For this purpose we developed a system , `` Computer VR Simulation System for the Safety of Railway Transportation . '' It is a new type simulation system to evaluate measures to be taken under abnormal conditions . Users of this simulation system cooperate with one another to correct the abnormal conditions that have occurred in virtual reality . This paper reports the newly developed simulation system
doc_bio_tags: O O O O O O O O O O O B I O O O O B O O O O O O O O O O O O O O O O O O O O O B I I O O O O O O O O O O B I I I O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
extractive_keyphrases: railway transportation accidents normal train operation computer vr simulation system
abstractive_keyphrases: virtual reality simulation system abnormal conditions correction