AUTHOR=Bruni Stefano , Dindar Serdar , Kaewunruen Sakdirat TITLE=Editorial: Best Practices on Advanced Condition Monitoring of Rail Infrastructure Systems, Volume II JOURNAL=Frontiers in Built Environment VOLUME=7 YEAR=2021 URL=https://www.frontiersin.org/journals/built-environment/articles/10.3389/fbuil.2021.748846 DOI=10.3389/fbuil.2021.748846 ISSN=2297-3362