For multi-vehicle accidents

https://pr.portlandtribune.com/article/The-Weinstein-Firm-Addresses-Rising-Atlanta-Motorcycle-Fatalities-and-New-Legal-Challenges-Under-Senate-Bill-68?storyId=69fa65b6cdd5c000024f22ba

For multi-vehicle accidents, record the positions and sequence of impacts; sketch a quick diagram to help recall later accurately.