There are lots of limitations noted for this study you to recommend opportunities for coming research. First, the new cross-sectional design of the study does not help us mark conclusions concerning the directions of causality for some details (travels mission, function selection, travelling friends). A whole lot more longitudinal knowledge towards travel go out have fun with must mention it causation. 2nd, our very own analysis cannot be the cause of tertiary big date explore, due to the low-availability of research. 3rd, the studies does not have sufficient suggestions concerning the onboard sites relationships, interior decoration and the way to obtain gadgets towards the trains and buses otherwise needs to have situations whilst travelling, function need otherwise vehicle sharing, which could provide more information on travel time fool around with. 4th, the actions i investigation are low-exhaustive of all the issues that would be over through the travel one might have gender distinctions, particularly eating/drinking otherwise brushing.