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There are some places with red pavement on the floor recently to make it easy to recognize that Seoul is a child sanctuary. However, people who have driven have complained that the pavement is slippery and the brakes are not heard.

Reporter Yoo Soo-hwan went to the scene, let's look together.

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Downhill in front of a middle school in Seoul.

When the town bus enters the area painted with red paint, it loses its center and slides into the guardrail.

[Mr. / accident village bus driver: When I braked, I just slipped and got a guardrail.]

The road where the accident happened was two months ago when Seoul City paved about 150 meters in red to make the children's sanctuary stand out and prevent slipping.

Bus drivers say the roads got slippery after packing.

[Jang Young-jin / city bus driver: brakes go down than expected distance. When a sudden braking causes passengers to fall over… ]

At the end of this red painted road is a town bus stop and a crossing.

Bus drivers worry about slipping and hitting people waiting.

The city kept up with the friction coefficient of the road to meet government standards, but only when the knights picked up the city official and showed that they actually slipped.

Similar child sanctuaries are also nearby.

[Mr. Cincinnati bus driver: It slips more than asphalt. It's called a child sanctuary, but it looks like a catch for children.

Experts point out that it is a matter of setting the allowable friction coefficient without considering various factors that cause slippage.

[Park Tae-soon / Department of Construction Systems Engineering, Seoul National University of Science and Technology: (slip) depends on the weight, the bus brakes, or the amount of water. ]

The city announced that it would re-slip anti-skid packaging in the area after SBS covered.

(Video coverage: Yang Hyun-chul Kim Yong-woo, Video editing: Kim Ho-jin, VJ: Kim Hyung-jin)