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This morning, on the 6th, there were many people who noticed that it took more than an hour to go in 10 minutes or took a bus without knowing anything. Some point out that if you tell us a little earlier and in more detail where you can't go now and where you are, you can stop congestion like today.

Reporter Park Jae-hyun pointed out what to supplement.

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Major road control is decided by the police, the Seoul Metropolitan Government, and the Seoul Facility Management Corporation.

Discussions begin when the water level rises and there is a risk of the road being locked.

The criterion for blocking the Seoul Olympic Road is the situation of Yeoui upper class with the lowest rent.

The road is locked when the water level reaches 5.4 meters, and the discussion begins with about 1.5 meters of submerged water and starts blocking with 1 meter left.

The standard for blocking the riverside North Road is 7.33 meters above the northern end of the Hangang Railway Bridge.

When the police decide to stop, the city of Seoul notifies citizens through disaster texts.

It was around 5 am that Seoul Metropolitan City announced the control of major roads today as a disaster message.

However, the news that the Yangjaecheon Yeongdong 1 Bridge, Jeungsan Bridge Underpass, and Nodeul Road sections are controlled is missing due to emergency notifications.

The driver who entered this road without being guided became a trapped person.

[Commuter driver: It was controlled just 100 meters ahead. I'm around for hours now. It seems to have taken 40-50 minutes to come back.]

There has been an experience in social media that there was no notice of control of Nodeulgil, so I experienced an inconvenience.

Currently, disaster texts are sent to the subjective judgment of the staff in charge when initial response is needed and when there is concern about the spread of the disaster.

There is no specific standard for how to send a road of any size when the road is controlled.

The forecasting system is complemented in more detail, but when there are many control sections, citizens' efforts to use public transportation are also required.

(Video coverage: Yongwoo Kim, Video editing: Lee So-young, CG: Hyun-jung Jeong)