| Measure the streets and intersections. |
| Measure the skid marks. |
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| Diagram and measure locations of debris. |
| Time the traffic signals. |
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Sun / Moon, location and phase. |
| Weather at the time of the accident. |
| Measure vehicle damage. |
Possible vehicle defects relating to safety. |
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Consumer complaints relating to safety. |
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If road construction was underway, identify those involved and diagram conditions at time of accident.
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