one thing make me adrenalin

When I was 7 years old. I went to school on feet. One day, after the breakfast I went to school.
I saw a terrible traffic accident on my way to school. I saw a car and a bike collided at the junction. At the scene of traffic accident there had many people; I can saw much blood around the road.
Passerbies were talked about the traffic accident. There had a man lie in the road, but he was died. Fear thrilled through my veins.
Because I still stand at the scene of traffic accident for one hours, so I late for school. I don’t want these things happened again. So I want to call attention to people should pay more regard to safety on the roads.