Presented here with permission of the author. Upon arrival you see cars all on and off the road and debris strewn all over the highway. Although it's two o'clock in the morning on a normally deserted stretch of road, onlookers seemingly have come out of the woodwork. Dozens of people are milling around. You rush to victims lying in the street, call for ambulances and wreckers, and begin the investigation process.
Someone is likely to chime in with an answer.
Don't act like you're God's Gift to Accident Investigation or give the impression you already have all the answers. Make the people in the crowd feel as though they are the smart ones and that you merely want to learn from them. Then go on about your business. In case I can't make something out, give me a phone number where I can reach you if I have any questions. With the statement in their handwriting, it can be concluded later that the statement is indeed theirs.