In June, a transparent liquid was found in the car of the Tobu Noda Line running in Chiba Prefecture, which affected the operation, but as a result of police investigation, this liquid got water when washing the car. It turned out to be a thing.
After 6 am on June 24, on a regular train from Kashiwa to Omiya on the Tobu Noda Line, a clear liquid was found spreading on the floor inside the car, and two passengers complained of problems at one time at the hospital. In addition to being treated in, the operation was affected.
Police were investigating the possibility that someone had sprayed the liquid, but as a result of conducting experiments using vehicles, the liquid may have entered through the gap in the door of the car wash machine. Was found to be high.
On the day of the event, there was a mistake in the stop position when putting the vehicle into the car wash machine, and it seems that the sprayed water hit the door.
Tobu Railway says, "We deeply apologize for the anxiety and concern of our users. We would like to make efforts to prevent recurrence."