Japanese officials have been busy over the past two weeks observing operations in and around the Asian Games venues in Indonesia to learn things that could help Tokyo put on a successful Olympics and Paralympics in 2020.

The priorities they focused on during the 16-day event, which ran from Aug. 18 to Sunday in Jakarta and Palembang, ranged from finding effective measures to deal with heat and heavy traffic to getting the best out of Japanese athletes.

As the record-breaking temperatures and stifling humidity this summer raised safety concerns for athletes and spectators alike, officials and sports bodies treated Indonesia's weather conditions as an opportunity to test their countermeasures.