Optimum table dimensions for PC users in Limited Express trains

Abstract

To investigate the effects of train vibrations on PC operation and on the users, a survey was carried out and related experiments were conducted. A poll of 114 on-boad PC users was undertaken to identify the limitations of present on-board conditions and to ascertain the needs of PC users. The results indicated that majority of subjects were not satisfied with the size or adjustability of the seat tables. Experiments based on the PC users' survey results were performed to ascertain the optimum working space for PC use on a moving train. The subjects evaluated various set conditions while performing tasks on a PC in a train simulator. Simultaneously, some autonomic responses such as heart rate, heart rate variability and respiration were measured. The results indicated the ideal lengths, positioning, and optimum adjustability range for seat tables. The importance of adequate table space between the PC and user was also confirmed.