The legend below will help you interpret the symbols and drawings in the collision diagram:
| Symbol/Word/Color | Description | 
| PDO | Property Damage Only. A number will appear before the code (i.e. 2 PDO) indicating the number of vehicles damaged. | 
| INJ | Injury Accident. A number will appear before the code (i.e. 1 INJ) indicating the number of people injured. | 
| FAT | Fatal Accident. A number will appear before the code (i.e. 1 FAT) indicating the number of fatalities. | 
| 
 | Head On | 
| 
 | Rear End | 
| 
 | Left Turn | 
| 
 | Right Turn | 
| 
 | Angle 
 | 
| 
 | Sideswipe Opposing | 
| 
 | Sideswipe Passing | 
| 
 | Pedestrian | 
| 
 | Fixed Object | 
| 
 | Other |