Logic Overview - Collision Diagrams

This article describes how the input of crash logic in Collision Diagrams correctly corresponds to the in-app data fields and diagrams.

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Written by Gentry White
Updated over a week ago

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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