You're driving down the highway and then BAM you see a car or motorcycle crash in front of you. What do you do?

We already know what to do if you if you yourself are in a crash, but what about when you see a car crash in front of you? How do you keep from getting rear ended? How do you help them and stay safe yourself? We hope to turn your answers into a straightforward how-to checklist for future use, so give us your own steps in what to do.

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