A public survey was conducted in March 2015 in Japan asking public awareness, knowledge, perception and acceptance regarding hydrogen, hydrogen infrastructure and fuel cell vehicle. Changes in answers were found by comparing results of current survey to those of the two previous surveys that were conducted six and seven years ago. We found a large increase in the awareness and relatively a small improvement on knowledge on hydrogen energy, hydrogen infrastructure and fuel cell vehicle from the previous surveys. In contrast we did not find much changes in perception of risk and benefit on hydrogen society and hydrogen station and public acceptance of hydrogen infrastructure. Through the regression analyses we found the small influence of time background as well as the influence of risk and benefit perception of hydrogen infrastructure on the acceptance. In conclusion, we find people have become a little more positive about hydrogen infrastructure in the baseline but more cautious about the risk and benefits. This can be interpreted as a change in the quality of perception and acceptance, that is, the favorable prejudice to hydrogen energy and fuel cell technologies has changed towards a slightly more rational support. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.