Traffic accident I saw yesterday Yesterday, when I heard a loud bang and saw a bus stopping right after it moved across the center of of the Isu station(subway line 7 of Seoul), I was crossing one of the crosswalk nearby. So, I looked at the center of the cross. There was a motorcycle fell down and a biker lying down very close. Since it happened only a couple of seconds after the traffic signal changed, probably the biker wanted to move fast before the bus arrive at the center of the cross and violated a traffic sign rule.