The following Countermeasures are available as filters in AASHTOWare Safety, and will appear as recommended countermeasures in Safety Analysis. Each Countermeasure and the logic used to identify crashes associated with that countermeasure are documented below.

The following logic is used to determine if crashes would be potentially mitigated by the Intersection Improvement-Rural Countermeasure:

Intersection Related = True

AND

Within Municipal Limits = False

The following logic is used to determine if crashes would be potentially mitigated by the Intersection Improvement-Urban Countermeasure:

Intersection Related = True

AND

Within Municipal Limits = True

The following logic is used to determine if crashes would be potentially mitigated by the Surface Treatment Countermeasure:

Intersection Related = False

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement-Light Countermeasure:

Intersection Related = False

AND

Light Condition = Any of the following (Dark-Not Lighted, Dark-Unknown Lighting, Dawn, Dusk)

The following logic is used to determine if crashes would be potentially mitigated by the Intersection Improvement-Rural Divided Countermeasure:

Intersection Related = TRUE

AND

Within Municipal Limits = False

AND

Divided / Undivided = Divided

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 0' Paved Shoulder High AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 0-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT > 2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 2' Paved Shoulder High AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 2-ft

AND

Trafficway Description = Not Divided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT > 2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 4' Paved Shoulder High AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 4-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT > 2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 6' Paved Shoulder High AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 6-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT > 2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 8' Paved Shoulder High AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 8-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT > 2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 0' Paved Shoulder Low AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 0-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT < 400"

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 2' Paved Shoulder Low AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 2-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT < 400

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 4' Paved Shoulder Low AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 4-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT < 400

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 6' Paved Shoulder Low AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 6-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT < 400

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 8' Paved Shoulder Low AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 8-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT < 400

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 0' Paved Shoulder Medium AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 0-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Sideswipe-Opposite OR Sideswipe-Same OR Head-On

OR

Sequence of Events = Ran-Off-Road Left OR Ran-Off-Road Right OR Cross Centerline

AND

AADT = 400-2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 2' Paved Shoulder Medium AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 2-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT = 400-2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 4' Paved Shoulder Medium AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 4-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT = 400-2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 6' Paved Shoulder Medium AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 6-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT = 400 -2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 8' Paved Shoulder Medium AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 8-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT = 400 -2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: Multilane 8' Paved Shoulder Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Outside Surface Shoulder = 8-ft

AND

Divided / Undivided = Divided

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

The following logic is used to determine if crashes would be potentially mitigated by the Install Centerline Rumble Strips Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

TWLTL = No

AND

Divided / Undivided = Undivided

AND

Centerline Rumble Strip = False

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 10' Lane Width Low AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 10'

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT < 400"

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 11' Lane Width Low AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 11'

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT < 400

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 12' Lane Width Low AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 12'

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT < 400

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 10' Lane Width High AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 10-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT > 2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 11' Lane Width High AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 11-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT > 2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 12' Lane Width High AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 12-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT > 2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 10' Lane Width Medium AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 10-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT = 400 -2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 11' Lane Width Medium AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 11-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT = 400 -2000

The following logic is used to determine if crashes would be potentially mitigated by the Roadway Improvement: 2-Lane 12' Lane Width Medium AADT Countermeasure:

Intersection Related = FALSE

AND

Within Municipal Limits = False

AND

Through Lane Width = 12-ft

AND

Divided / Undivided = Undivided

AND

Number of Through Lanes = 2

AND

Manner of Collision = Any of the following (Sideswipe-Opposite, Sideswipe-Same, Head-On)

OR

Sequence of Events = Any of the following (Ran-Off-Road Left, Ran-Off-Road Right, Cross Centerline)

AND

AADT = 400 -2000