They are crash-tested, but at a lower speed. Maybe Mr. Jang can provide the specific speed. When you have higher speeds, obviously there is a likelihood of greater damage. What we look at for each of the investigations is the relative performance. How many cars were involved? What speeds were they travelling at? What level of damage was incurred? How did these perform?
We can't say that the 117 cars will never be damaged, or that there's no risk. It depends on the speed and it depends on the crash dynamics at which the derailment happens and where it happens. All we can do is compare the relative performance. I can assure you that with the recent ministerial direction, at least the unjacketed 1232 cars have been removed from transporting crude oil about six months earlier, and petroleum distillates. They are not going to be used for the transportation of crude oil anymore.