This article outlines the logic used to plot crashes in the Collision Diagrams application.
The logic tables are broken into four categories, one for each direction of travel for vehicle 1 (Northbound, Southbound, Eastbound, and Westbound). To navigate to a specific crash, click on the crash description in the table below.
Each crash will contain the Crash Logic detailing the vehicle maneuvers, directions, and crash details, a screenshot from Collision Diagrams showing the data displayed in the application, and a screenshot of the crash displayed in the Collision Diagrams application. Each crash type will be mapped in the intersection diagram with a unique icon, depending on the specific crash details.
For more information on the Collision Diagrams application, see the Collision Diagrams - App Overview article.
NOTE ON CRASH SEVERITY: In the following examples, each crash is classified as a No Injury crash. Changing the Crash Severity will the color of mapped crash icon to match the corresponding KABCO Severity.
Vehicle 1 Northbound
Angle: V1 NB Straight, V2 EB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, traveling straight.
Vehicle 2, entering the intersection eastbound, traveling straight. |  |
Displayed in Diagram |
Angle: V1 NB Straight, V2 WB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, traveling straight.
Vehicle 2, entering the intersection westbound, traveling straight. |
Displayed in Diagram |
Front to Rear: V1 NB Straight, V2 NB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, front to rear crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, traveling straight.
Vehicle 2, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Front to Rear: V1 NB Straight, V2 NB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, front to rear crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, traveling straight.
Vehicle 2, entering the intersection northbound, slowing or stopped in traffic. |
Displayed in Diagram |
Front to Front: V1 NB Straight, V2 SB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, front to front crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, traveling straight.
Vehicle 2, entering the intersection southbound, traveling straight. |
Displayed in Diagram |
Sideswipe, Same Direction: V1 NB Straight, V2 NB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, sideswipe, same direction crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, traveling straight.
Vehicle 2, entering the intersection northbound, slowing or stopped in traffic. | 
|
Displayed in Diagram |
Sideswipe, Opposite Direction: V1 NB Straight, V2 SB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, sideswipe, opposite direction crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, traveling straight.
Vehicle 2, entering the intersection southbound, slowing or stopped in traffic. | 
|
Displayed in Diagram |
Angle: V1 NB Turning Right, V2 SB Turning Left
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, turning right.
Vehicle 2, entering the intersection southbound, turning left. |
Displayed in Diagram |
Angle: V1 NB Turning Right, V2 EB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, turning right.
Vehicle 2, entering the intersection eastbound, traveling straight. |
Displayed in Diagram |
Angle: V1 NB Turning Left, V2 SB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, turning left.
Vehicle 2, entering the intersection southbound, traveling straight. |
Displayed in Diagram |
Angle: V1 NB Turning Left, V2 WB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, turning left.
Vehicle 2, entering the intersection westbound, traveling straight. |
Displayed in Diagram |
Angle: V1 NB Turning Left, V2 EB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection northbound, turning left.
Vehicle 2, entering the intersection eastbound, traveling straight.
|
Displayed in Diagram |
Single Vehicle: V1 NB Straight
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Single Vehicle: V1 NB Turning Right
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection northbound, turning right. |
Displayed in Diagram |
Single Vehicle: V1 NB Turning Left
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection northbound, turning left. |
Displayed in Diagram |
Vehicle 1 Eastbound
Angle: V1 EB Straight, V2 NB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, traveling straight.
Vehicle 2, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Angle: V1 EB Straight, V2 SB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, traveling straight.
Vehicle 2, entering the intersection southbound, traveling straight. |
Displayed in Diagram |
Front to Rear: V1 EB Straight, V2 EB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, front to rear crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, traveling straight.
Vehicle 2, entering the intersection eastbound, traveling straight. |
Displayed in Diagram |
Front to Rear: V1 EB Straight, V2 EB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, front to rear crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, traveling straight.
Vehicle 2, entering the intersection eastbound, slowing or stopped in traffic. |
Displayed in Diagram |
Front to Front: V1 EB Straight, V2 WB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, front to front crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, traveling straight.
Vehicle 2, entering the intersection westbound, traveling straight. |
Displayed in Diagram |
Sideswipe, Same Direction: V1 EB Straight, V2 EB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, sideswipe, same direction crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, traveling straight.
Vehicle 2, entering the intersection eastbound, slowing or stopped in traffic. |
Displayed in Diagram |
Sideswipe, Opposite Direction: V1 EB Straight, V2 WB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, sideswipe, opposite direction crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, traveling straight.
Vehicle 2, entering the intersection westbound, slowing or stopped in traffic. |
Displayed in Diagram |
Angle: V1 EB Turning Right, V2 WB Turning Left
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, turning right.
Vehicle 2, entering the intersection westbound, turning left. |
Displayed in Diagram |
|
Angle: V1 EB Turning Right, V2 SB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, turning right.
Vehicle 2, entering the intersection southbound, traveling straight. |
Displayed in Diagram |
|
Angle: V1 EB Turning Left, V2 WB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, turning left.
Vehicle 2, entering the intersection westbound, traveling straight. |
Displayed in Diagram |
Angle: V1 EB Turning Left, V2 NB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, turning left.
Vehicle 2, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Angle: V1 EB Turning Left, V2 SB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection eastbound, turning left.
Vehicle 2, entering the intersection southbound, traveling straight. |
Displayed in Diagram |
Single Vehicle: V1 EB Straight
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection eastbound, traveling straight. |
Displayed in Diagram |
Single Vehicle: V1 EB Turning Right
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection eastbound, turning right. |
Displayed in Diagram |
|
Single Vehicle: V1 EB Turning Left
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection eastbound, turning left.
|
Displayed in Diagram |
Vehicle 1 Southbound
Angle: V1 SB Straight, V2 EB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, traveling straight.
Vehicle 2, entering the intersection eastbound, traveling straight. |
Displayed in Diagram |
Angle: V1 SB Straight, V2 WB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, traveling straight.
Vehicle 2, entering the intersection westbound, traveling straight. |
Displayed in Diagram |
Front to Rear: V1 SB Straight, V2 SB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, front to rear crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, traveling straight.
Vehicle 2, entering the intersection southbound, traveling straight. |
Displayed in Diagram |
Front to Rear: V1 SB Straight, V2 SB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, front to rear crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, traveling straight.
Vehicle 2, entering the intersection southbound, slowing or stopped in traffic. |
Displayed in Diagram |
Front to Front: V1 SB Straight, V2 NB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, front to front crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, traveling straight.
Vehicle 2, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Sideswipe, Same Direction: V1 SB Straight, V2 SB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, sideswipe, same direction crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, traveling straight.
Vehicle 2, entering the intersection southbound, slowing or stopped in traffic. |
Displayed in Diagram |
Sideswipe, Opposite Direction: V1 SB Straight, V2 NB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, sideswipe, opposite direction crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, traveling straight.
Vehicle 2, entering the intersection northbound, slowing or stopped in traffic. |
Displayed in Diagram |
|
Angle: V1 SB Turning Right, V2 NB Turning Left
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, turning right.
Vehicle 2, entering the intersection northbound, turning left. |
Displayed in Diagram |
Angle: V1 SB Turning Right, V2 WB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, turning right.
Vehicle 2, entering the intersection westbound, traveling straight. |
Displayed in Diagram |
Angle: V1 SB Turning Left, V2 WB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, turning left.
Vehicle 2, entering the intersection westbound, traveling straight. |
Displayed in Diagram |
Angle: V1 SB Turning Left, V2 NB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, turning left.
Vehicle 2, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Angle: V1 SB Turning Left, V2 EB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection southbound, turning left.
Vehicle 2, entering the intersection eastbound, traveling straight. |
Displayed in Diagram |
Single Vehicle: V1 SB Straight
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection southbound, traveling straight |
Displayed in Diagram |
|
Single Vehicle: V1 SB Turning Right
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection southbound, turning right. |
Displayed in Diagram |
Single Vehicle: V1 SB Turning Left
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection southbound, turning right. |
Displayed in Diagram |
Vehicle 1 Westbound
Angle: V1 WB Straight, V2 SB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, traveling straight.
Vehicle 2, entering the intersection southbound, traveling straight. |
Displayed in Diagram |
Angle: V1 WB Straight, V2 NB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, traveling straight.
Vehicle 2, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Front to Rear: V1 WB Straight, V2 WB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, front to rear crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, traveling straight.
Vehicle 2, entering the intersection westbound, traveling straight. |
Displayed in Diagram |
Front to Rear: V1 WB Straight, V2 WB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, front to rear crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, traveling straight.
Vehicle 2, entering the intersection westbound, slowing or stopped in traffic. |
Displayed in Diagram |
Front to Front: V1 WB Straight, V2 EB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, front to front crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, traveling straight.
Vehicle 2, entering the intersection eastbound, traveling straight. |
Displayed in Diagram |
Sideswipe, Same Direction: V1 WB Straight, V2 WB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, sideswipe, same direction crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, traveling straight.
Vehicle 2, entering the intersection westbound, slowing or stopped in traffic. |
Displayed in Diagram |
Sideswipe, Opposite Direction: V1 WB Straight, V2 EB Slowing or Stopped in Traffic
Crash Logic | In-App Data Fields |
Two or more vehicles, sideswipe, opposite direction crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, traveling straight.
Vehicle 2, entering the intersection eastbound, slowing or stopped in traffic. |
Displayed in Diagram |
Angle: V1 WB Turning Right, V2 EB Turning Left
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, turning right.
Vehicle 2, entering the intersection eastbound, turning left. |
Displayed in Diagram |
Angle: V1 WB Turning Right, V2 NB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, turning right.
Vehicle 2, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Angle: V1 WB Turning Left, V2 EB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, turning left.
Vehicle 2, entering the intersection eastbound, traveling straight. |
Displayed in Diagram |
Angle: V1 WB Turning Left, V2 SB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, turning left.
Vehicle 2, entering the intersection southbound, traveling straight. |
Displayed in Diagram |
Angle: V1 WB Turning Left, V2 NB Straight
Crash Logic | In-App Data Fields |
Two or more vehicles, angle crash, (the First Harmful Event field will not impact how this type of crash is mapped).
Vehicle 1, entering the intersection westbound, turning left.
Vehicle 2, entering the intersection northbound, traveling straight. |
Displayed in Diagram |
Single Vehicle: V1 WB Straight
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection westbound, traveling straight |
Displayed in Diagram |
Single Vehicle: V1 WB Turning Right
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection westbound, turning right. |
Displayed in Diagram |
Single Vehicle: V1 WB Turning Left
Crash Logic | In-App Data Fields |
Single vehicle crash, with First Harmful Event of either, Pedestrian, Bicycle, or Animal.
Vehicle 1, entering the intersection westbound, turning left. |
Displayed in Diagram |
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