Hello!
Yes, this is a notification regarding unpaid tolls (미납통행료) for the Sinwol-Yeouido Underground Road (신월여의지하도로). The operator of this road does indeed have a system where notifications and/or payment details are sent via KakaoTalk Electronic Document (카카오톡 전자문서) / Authentication Talk (인증톡).
Based on the screenshot, you can verify that the message came from an official distribution list.
There is a checkmark at the top, and a "какао" icon on the right. Therefore, you don't need to worry, and it is advisable to pay the toll; the fee will be higher upon a second notification.
If you use a Hi-pass card, you may have had insufficient funds on the card; if you do not use such a card, then the toll for the road was simply not paid, and you can pay it online.
2026-02-12 18:38