Japan disaster experts warn people not to travel unnecessarily during heavy rain

One month after torrential rain in Chiba Prefecture claimed 13 lives, heavy rain has continued to strike Japan, triggering the country's highest-level alert in areas such as Hokuriku and Tokai. Experts warn people against traveling unnecessarily during these emergencies. In Chiba and Aichi prefectures, torrential rain disrupted transportation and left people stranded.

Smartphone location data from Chiba city showed that people continued moving even after an emergency warning was issued. Traffic remained heavy on major roads during the peak of the storm, with movement increasing again after the rain lessened. Associate Professor Junji Urata from the University of Tsukuba noted that many people may have been trying to pick up family members, and nighttime driving during heavy rain is particularly dangerous due to poor visibility and flooded roads.

The government advises carrying emergency supplies like food, water, and mobile phone batteries, and checking temporary shelter locations ahead of time. Drivers are urged to avoid unnecessary travel and wait in safe locations when Heavy Rain Emergency Warnings are in effect. Underground facilities and underpasses should be avoided as they can flood quickly.

A hammer in the car is recommended for emergency egress. Urata warns that "normalcy bias" often leads people to underestimate danger and delay evacuation. He emphasizes the importance of obtaining accurate information and making sound decisions, even while driving. People should question their own risk assessment and prioritize safety above all else.