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Utah Department of Transportation
UDOT - UTAPS Countermeasure Definitions
UDOT - UTAPS Countermeasure Definitions

Contains a list of the UDOT Countermeasure Definition Logic.

Greg Olsen avatar
Written by Greg Olsen
Updated over a week ago

Right-Turn Lane

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Roadway/Junction Feature = 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5-Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection With Crossorad, 26 - Multi Use Path/Trail Intersection

AND

Number of Vehicles Involved ≥ 2

AND

Traffic Control Device = 0 - None, 1 - Traffic Control Signal

AND

Manner of Collision = 1 - Angle, 2 - Front to Rear, 4 - Sideswipe Same Direction

AND

Vehicle Maneuver = 5 - Turning Right

NOT Condition Asset Check

File “Lanes” Field “R_TURN_CNT” > 0 (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

Left-Turn Lane

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Roadway/Junction Feature = 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Number of Vehicles Involved ≥ 2

AND

Manner of Collision = 1 - Angle, 2 - Front to Rear, 3 - Head On, 5 - Sideswipe Opposite Direction

AND

Vehicle Maneuver = 6 - Turning Left

NOT Condition Asset Check

File “Lanes” Field “L_TURN_CNT” > 0 (At crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

OR

File “Lanes” Field “TWOWAY_CNT” > 0 (At crash route/mp “START ACCUM”, “END ACCUM”,

Left-Turn Phase Change

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Roadway/Junction Feature = 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Number of Vehicles Involved ≥ 2

AND

Traffic Control Device = 1 - Traffic Control Signal

AND

Manner of Collision = 1 - Angle, 3 - Head On

AND

Vehicle Maneuver = 6 - Turning Left

Roundabout or Signal

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Roadway/Junction Feature = 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Number of Vehicles Involved ≥ 2

AND

Traffic Control Device ≠ 1 - Traffic Control Signal

AND

Manner of Collision = 1 - Angle, 3 - Head On

AND

Vehicle 1 Travel Direction ≠ Vehicle 2 Travel Direction

Centerline Rumblestrips

Yes/No Field

Vehicle Number = 1

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Roadway Description = 1 - Two-Way Not Divided, 2 - Two-Way Not Divided with a Continuous Left Turn Lane

AND

Sequence of Events 1 = 2 - Ran Off Road Left (retired), 3 - Crossed Median/Centerline (retired), 80 - Crossed Centerline, 81 - Crossed Median, 85 - Ran Off Road Left

AND

Manner of Collision = 3 - Head On, 5 - Sideswipe Opposite Direction, 96 - Not Applicable/Single Vehicle

NOT Condition Asset Check

File “Shoulders” Field “EDGE_TYPE” Contains “Curb/Cutter” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

OR

File “Rumble_Strips” Field “Type” Contains “Centerline” (at cras route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

Shoulder Rumblestrips

Yes/No field

Vehicle Number = 1

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Manner of Collision = 96 - Not Applicable/Single Vehicle

AND

Sequence of Events 1 = 1 - Ran Off Road Right (retired), 86 - Ran Off Road Right

OR

Sequence of Events 1 = 2 - Ran Off Road Left (retired), 85 - Ran Off Road Left

AND

Roadway Description = 3 - Two-way Divided Unprotected Median, 4 - Two-Way Divided Positive Median Barrier

NOT Condition Asset Check

File “Shoulders” Field “EDGE_TYPE” Contains “curb/gutter” (at crash route/mp ”START ACCUM”, “END ACCUM”, “ROUTE”

OR

File “Rumble_Strips” Field “TYPE” Contains “shoulder” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”

Pave or Widen Shoulder

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Manner of Collision = 96 - Not Applicable/Single Vehicle

AND

Sequence of Events 1 = 1- Ran Off Road Right (retired), 40 - Guardrail, 41 - Concrete Barrier, 42 - Cable Barrier, 43 - Crash Cushion, 44 - Guardrail End Section, 45 - Concrete Sloped End Section, 46 - Cable Barrier End Section, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier of Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 - Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant (retired), 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 68 - Other Traffic Barrier, 69 - Other Fixed Object, 86 - Ran Off Road Right

NOT Condition Asset Check

File “Shoulders” Field “EDGE_TYPE” Contains “curb/gutter” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

OR

File “Shoulders” Field “SHLDR_WIDTH” > 4 (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

Clear Zone Improvements

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Manner of Collision = 96 - Not Applicable/Single Vehicle

AND

Sequence of Events 1 = 1 - Ran Off Road Right (retired), 2 - Ran Off Road Left (retired), 85 - Ran Off Road Left, 86 - Ran Off Road Right

OR

Sequence of Events 2 = 1 - Ran Off Road Rght (retired), 2 - Ran Off Road Left (retired) 85 - Ran Off Road Left, 86 - Ran Off Road Right

AND

Sequence of Events 2 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 - Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

OR

Sequence of Events 3 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 - Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

OR

Sequence of Events 4 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 - Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

NOT Condition Asset Check

File “Shoulders” Field “EDGE_TYPE” Contains “curb/gutter” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

Shoulder Barrier

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Manner of Collision = 96 - Not Applicable/Single Vehicle

AND

Sequence of Events 1 = 1 - Ran Off Road Right (retired), 86 - Ran Off Road right

OR

Sequence of Events 1 = 2 - Ran Off Road Left (retired), 85 - Ran Off Road Left

AND

Roadway Description = 3 - Two-way Divided Unprotected Median

AND

Sequence of Events 2 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 - Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

OR

Sequence of Events 3 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 - Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

OR

Sequence of Events 4 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 - Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

AND

Sequence of Events 2 ≠ 40 - Guardrail, 41 - Concrete Barrier, 42 - Cable Barrier, 43 - Crash Cushion, 44 - Guard Rail End Section, 45 - Concrete Sloped End Section, 46 - Cable Barrier End Section, 68 - Other Traffic Barrier

AND

Sequence of Events 3 ≠ 40 - Guardrail, 41 - Concrete Barrier, 42 - Cable Barrier, 43 - Crash Cushion, 44 - Guard Rail End Section, 45 - Concrete Sloped End Section, 46 - Cable Barrier End Section, 68 - Other Traffic Barrier

AND

Sequence of Events 4 ≠ 40 - Guardrail, 41 - Concrete Barrier, 42 - Cable Barrier, 43 - Crash Cushion, 44 - Guard Rail End Section, 45 - Concrete Sloped End Section, 46 - Cable Barrier End Section, 68 - Other Traffic Barrier

NOT Condition Asset Check

File “Shoulders” Field “EDGE_TYPE” Contains “curb/gutter” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

OR

File “Barriers” Field ‘UTPOSITION” = “Right” (at crash route/mp “START ACCUM”, “END ACCM”, “ROUTE”), “Left” (at crash route/mp “START ACCUM”, “END ACCM”, “ROUTE”)

Median Barrier

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Manner of Collision = 3 - Head On, 5 - Sideswipe Opposite Direction, 96 - Not Applicable/Single Vehicle

AND

Roadway Description = 3 - Two-Way Divided Unprotected Median

AND

Sequence of Events 1 = 2 - Ran Off Road Left (Retired), 3 - Crossed Median/Centerline (retired), 80 - Crossed Centerline, 81 - Crossed Median, 85 - Ran Off Road Left

AND

Sequence of Events 2 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

OR

Sequence of Events 3 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

OR

Sequence of Events 4 = 7 - Overturn/Rollover, 11 - Immersion, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 - Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 69 - Other Fixed Object

NOT Condition Asset Check

File “Shoulders” Field “EDGE_TYPE” Contains “curb/gutter” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

OR

File “Barriers” Field “UTPOSITION” = “center” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE_NAME”)

Curve Signing or Delineation

Yes/No Field

Vehicle Number = 1

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Manner of Collision = 3 - Head On, 5 - Sideswipe Opposite Direction, 96 - Not Applicable/Single Vehicle

AND

Horizontal Alignment = 2 - Curve (retired), 3 - Curve Left, 4 - Curve Right

OR

Vehicle Maneuver = 15 - Negotiating a Curve

AND

Sequence of Events 1 = 1 - Ran Off Road Right (retired), 2 - Ran Off Road Left (retired), 3 - Crossed Median/Centerline (retired), 40 - Guardrail, 41 - Concrete Barrier, 42 - Cable Barrier, 43 - Crash Cushion, 44 - Guardrail End Section, 45 - Concrete Sloped End Section, 46 - Cable Barrier End Section, 47 - Access Control Cable (retired), 48 - Bridge Rail, 49 Bridge Pier or Support, 50 - Bridge Overhead Structure, 51 - Traffic Sign Support, 52 - Delineator Post, 53 - Other Post Pole or Support, 54 - Utility Pole/Light Support, 55 - Traffic Sign Support, 56 - Culvert, 57 - Ditch, 58 - Embankment, 59 - Snow Basin, 60 - Tree/Shrubbery, 61 - Mailbox/Fire Hydrant, 62 - Fence, 63 - Curb, 64 - Fire Hydrant, 65 - Mailbox, 66 - Building, 67 - Utility Box, 68 - Other Traffic Barrier, 69 - Other Fixed Object, 80 - Crossed Centerline, 81 - Crossed Median, 85 - Ran Off Road Left, 86 - Ran Off Road Right

Intersection Lighting

Yes/No Field

Vehicle Number = 1

AND

Roadway/Junction Feature = 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5-Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection With Crossroad, 26 - Multi Use Path/Trail Intersection

AND

Light Condition = 3 - Dark-Not Lighted, 4 - Dark-Unknown Lighting

Raised Median

Yes/No Field

[Note: All criteria must be met in either vehicle #1 or vehicle #2. Check criteria for Vehicle #1 and then for vehicle #2. Criteria cannot be mixed between vehicles.]

Vehicle Number = 1

OR

Vehicle Number = 2

AND

Number of Vehicles Involved ≥ 2

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5 Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection with Crossroad, 26 - Multi-use PathTrail Intersection

AND

Roadway Description = 1 - Two-Way Not Divided, 2 - Two-Way Not Divided With a Continuous Left Turn Lane

AND

Vehicle Maneuver = 6 - Turning Left, 7 - Making U-Turn

AND

Total Number of Roadway Lanes ≥ 3

NOT Condition Asset Check

File “Medians” Field “MEDIAN_TYP” ≠ “Undivided” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE_NAME”), “painted median “(at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE_NAME”), “no median” (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE_NAME”)

Active Transportation Improvement

Yes/No Field

Vehicle Number = 1

AND

Sequence of Events 1 = 22 - Pedestrian, 23 - Pedalcycle, 24 - Other Non-Motorist

OR

Sequence of Events 2 = 22 - Pedestrian, 23 - Pedalcycle, 24 - Other Non-Motorist

OR

Sequence of Events 3 = 22 - Pedestrian, 23 - Pedalcycle, 24 - Other Non-Motorist

OR

Sequence of Events 4 = 22 - Pedestrian, 23 - Pedalcycle, 24 - Other Non-Motorist

OR

Most Harmful Event = 22 - Pedestrian, 23 - Pedalcycle, 24 - Other Non-Motorist

OR

First Harmful Event = 22 - Pedestrian, 23 - Pedalcycle, 24 - Other Non-Motorist

OR

Person Type = 3 - Pedestrian, 4 - Pedalcyclist, 5 - Other Pedestrian

Runaway Truck Ramp

Yes/No Field

Vehicle number = 1

AND

Motor Vehicle Body Type = 7- Single Unit Truck, 8 - Single Unit Truck (3 or more axles) (retired), 9 - Truck Tractor, 10 - Truck/Trailer (retired), 11 - Heavy Truck Other, 13 - School Bus, 14 - Bus/Motorcoach (not school) (retired), 18 - RV/Motor Home, 29 - Transit Bus, 30 - Motorcoach, 31 - Other Bus Type

AND

Sequence of Events 1 = 4 - Equipment Failure (tire, brakes, etc.) (retired), 6 - Downhill Runaway (retired), 83 - Downhill Runaway, 84 - Equipment Failure (blown tire, brake failure, etc.)

OR

Sequence of Events 2 = 4 - Equipment Failure (tire, brakes, etc.) (retired), 6 - Downhill Runaway (retired), 83 - Downhill Runaway, 84 - Equipment Failure (blown tire, brake failure, etc.)

OR

Sequence of Events 3 = 4 - Equipment Failure (tire, brakes, etc.) (retired), 6 - Downhill Runaway (retired), 83 - Downhill Runaway, 84 - Equipment Failure (blown tire, brake failure, etc.)

OR

Sequence of Events 4 = 4 - Equipment Failure (tire, brakes, etc.) (retired), 6 - Downhill Runaway (retired), 83 - Downhill Runaway, 84 - Equipment Failure (blown tire, brake failure, etc.)

OR

Vehicle Contributing Circumstances = 1 - Brakes

AND

Vertical Alignment = 2 - Grade (retired), 5 - Uphill, 6 - Downhill

AND

Posted Speed ≥ 45

Passing Lane

Yes/No Field

Vehicle Number = 1

AND

Vehicle Maneuver = 4 - Overtaking/Passing

AND

Roadway Description = 1 - Two-Way Not Divided, 2 - Two-Way Not Divided With a Continuous Left Turn Lane

NOT Condition Asset Check

File “Lanes” Fields (“PASS_CNT” + “THRU_CNT”) > 3 (at crash route/mp “START ACCUM”, “END ACCUM”, “ROUTE”)

Drainage Improvements

Yes/No Field

Vehicle Number = 1

AND

Roadway Surface Condition = 6 - Water (standing, moving)

High Friction Surface

Yes/No Field

Vehicle Number = 1

AND

Horizontal Alignment = 2 - Curve (retired), 3 - Curve Left, 4 - Curve Right

AND

Roadway/Junction Feature ≠ 20 - 4-Leg Intersection, 21 - T-Intersection, 22 - Y-Intersection, 23 - 5-Leg or More Intersection, 24 - Roundabout/Traffic Circle, 25 - Ramp Intersection With Crossroad, 26 - Multi Use Path/Trail Intersection

AND

Manner of Collision ≠ 2 - Front to Rear

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