Crash-Specific Variables
To see detailed information on a variable click on name.
AX_YEAR (Year of crash) AX_MONTH (Month of crash)
DAY_WEEK (Week day of crash AX_HOUR (Hour of crash)
NUM_VEHICS (#of cars involved) SEVERITY
AX_TYPE (Type of crash) ROADSURFAC (Surface conditions)
LIGHT (Lighting condition) WEATHER
ROADDEFECT (Defect in roadway) SUBSEQ1 (1st harmful event after crash)
SUBSEQ2(2nd harmful event) INTERSECT (Type of intersection)
TOT_PEOPLE (# of people in crash) LOCALITY (Crash location)
TRFCONTROL (Control devices) ROAD_CHAR (Characteristic of Roadway)
TIMEARRIVE(Arrival of law officers) TIMENOTIFY (Notification of law agency)
COUNTY (County where crash occured)
NAME OF DATA ELEMENT: AX_YEAR
DEFINITION: Year accident occurred
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 2 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 2 character number specifying the year in which the accident occurred.
The prefix, 19, is assumed. For example, 1991 is listed as "91."
STATISTICAL ANALYSIS:
The study year is 1991 for all incidents. It was pointed out by the CODES Advisory Committee that
this data element should become a 4 digit alphanumeric code to facilitate the impending turn
of the century.
STRENGTHS AND WEAKNESSES:
Not applicable.
NAME OF DATA ELEMENT: AX_MONTH
DEFINITION: Month accident occurred
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 2 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 01 = January
- 02 = February
- 03 = March
- 04 = April
- 05 = May
- 06 = June
- 07 = July
- 08 = August
- 09 = September
- 10 = October
- 11 = November
- 12 = December
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
AX_MONTH Frequency Percent Frequency Percent
-------------------------------------------------------
Unknown 5 0.0 5 0.0
January 8536 8.7 8541 8.7
February 6579 6.7 15120 15.4
March 8097 8.2 23217 23.6
April 8304 8.4 31521 32.0
May 7839 8.0 39360 40.0
June 7577 7.7 46937 47.7
July 8169 8.3 55106 56.0
August 8635 8.8 63741 64.8
September 7932 8.1 71673 72.9
October 8771 8.9 80444 81.8
November 9081 9.2 89525 91.0
December 8848 9.0 98373 100.0
Motorcycles
Cumulative Cumulative
AX_MONTH Frequency Percent Frequency Percent
-------------------------------------------------------
January 9 1.0 9 1.0
February 18 2.1 27 3.1
March 42 4.9 69 8.0
April 70 8.1 139 16.1
May 88 10.2 227 26.3
June 114 13.2 341 39.5
July 163 18.9 504 58.4
August 148 17.1 652 75.6
September 112 13.0 764 88.5
October 74 8.6 838 97.1
November 18 2.1 856 99.2
December 7 0.8 863 100.0
STRENGTHS AND WEAKNESSES:
Not applicable.
NAME OF DATA ELEMENT: DAY_WEEK
DEFINITION: Day of the week accident occurred
SOURCE FILE: Crash file
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 1 digit character number and is coded as follows:
- 1 = Monday
- 2 = Tuesday
- 3 = Wednesday
- 4 = Thursday
- 5 = Friday
- 6 = Saturday
- 7 = Sunday
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
DAY_WEEK Frequency Percent Frequency Percent
-------------------------------------------------------
Monday 13855 14.1 13855 14.1
Tuesday 13481 13.7 27336 27.8
Wednesday 13806 14.0 41142 41.9
Thursday 15146 15.4 56288 57.3
Friday 18434 18.8 74722 76.0
Saturday 15544 15.8 90266 91.8
Sunday 8034 8.2 98300 100.0
Frequency Missing = 73
Motorcycles
Cumulative Cumulative
DAY_WEEK Frequency Percent Frequency Percent
-------------------------------------------------------
Monday 109 12.7 109 12.7
Tuesday 123 14.3 232 26.9
Wednesday 128 14.9 360 41.8
Thursday 126 14.6 486 56.4
Friday 118 13.7 604 70.2
Saturday 140 16.3 744 86.4
Sunday 117 13.6 861 100.0
Frequency Missing = 2
STRENGTHS AND WEAKNESSES:
Not Applicable.
NAME OF DATA ELEMENT: AX_HOUR
DEFINITION: Hour of the day accident occurred
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 2 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 2 digit character number referring to the hour of
the day that the accident occurred coded in military time.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
AX_HOUR Frequency Percent Frequency Percent
-----------------------------------------------------
00 1272 1.3 1272 1.3
01 1130 1.2 2402 2.4
02 706 0.7 3108 3.2
03 441 0.4 3549 3.6
04 425 0.4 3974 4.0
05 752 0.8 4726 4.8
06 1715 1.7 6441 6.6
07 4201 4.3 10642 10.8
08 4092 4.2 14734 15.0
09 3259 3.3 17993 18.3
10 3904 4.0 21897 22.3
11 4698 4.8 26595 27.1
12 6381 6.5 32976 33.6
13 5689 5.8 38665 39.4
14 6813 6.9 45478 46.3
15 7948 8.1 53426 54.4
16 8869 9.0 62295 63.5
17 10144 10.3 72439 73.8
18 7534 7.7 79973 81.5
19 5178 5.3 85151 86.8
20 3771 3.8 88922 90.6
21 3636 3.7 92558 94.3
22 3156 3.2 95714 97.5
23 2379 2.4 98093 100.0
24 43 0.0 98136 100.0
Frequency Missing = 237
Motorcycles
Cumulative Cumulative
AX_HOUR Frequency Percent Frequency Percent
-----------------------------------------------------
00 24 2.8 24 2.8
01 17 2.0 41 4.8
02 11 1.3 52 6.0
03 11 1.3 63 7.3
04 2 0.2 65 7.5
05 8 0.9 73 8.5
06 10 1.2 83 9.6
07 12 1.4 95 11.0
08 16 1.9 111 12.9
09 24 2.8 135 15.6
10 23 2.7 158 18.3
11 37 4.3 195 22.6
12 41 4.8 236 27.3
13 49 5.7 285 33.0
14 47 5.4 332 38.5
15 46 5.3 378 43.8
16 76 8.8 454 52.6
17 87 10.1 541 62.7
18 70 8.1 611 70.8
19 67 7.8 678 78.6
20 49 5.7 727 84.2
21 54 6.3 781 90.5
22 42 4.9 823 95.4
23 40 4.6 863 100.0
STRENGTHS AND WEAKNESSES:
This is a crash specific data element which has been assigned to every occupant.
Thus, the numbers in the frequency tables above refer to the number of occupants who
were involved in crashes at the stated times, not the number of crashes which occured
at the stated times.
NAME OF DATA ELEMENT: NUM_VEHICS
DEFINITION: Number of vehicles involved in accident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 2 Digit Numeric
DATA ELEMENT CONTENT:
This data element is a 2 digit character numeric which indicates the number of
vehicles involved in a single accident. This number includes all motor vehicles,
non-contact vehicles, and bicycles if they are listed in the vehicle section of
the report form.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
NUM_VEHI Frequency Percent Frequency Percent
------------------------------------------------------
1 16165 16.4 16165 16.4
2 68849 70.0 85014 86.4
3 10405 10.6 95419 97.0
4 2258 2.3 97677 99.3
5 492 0.5 98169 99.8
6 115 0.1 98284 99.9
7 53 0.1 98337 100.0
8 7 0.0 98344 100.0
15 8 0.0 98352 100.0
24 21 0.0 98373 100.0
Motorcycles
Cumulative Cumulative
NUM_VEHI Frequency Percent Frequency Percent
------------------------------------------------------
1 343 39.7 343 39.7
2 498 57.7 841 97.5
3 17 2.0 858 99.4
4 3 0.3 861 99.8
5 2 0.2 863 100.0
STRENGTHS AND WEAKNESSES:
This is a crash specific data element which has been assigned to all involved
occupants. Thus, there were not 21 crashes involving 24 vehicles (see above);
there were 21 individuals involved in a crash which involved 24 vehicles.
NAME OF DATA ELEMENT: SEVERITY
DEFINITION: Determination of accident severity
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 1 digit character number coded as follows:
- 1 = Damage only, no injury, is a situation in which there is
no reason to believe that any person suffered any bodily harm as a result
of the motor vehicle traffic accident. This includes confusion, excitement,
anger, and internal injuries unknown to the person until after leaving the
scene.
- 2 = Possible injury is any injury, reported or claimed, which
is neither fatal, incapacitating or non-incapacitating. This includes momentary
unconsciousness, claims of injury that are not evident, limping, complaint
of pain, nausea, or hysteria.
- 3 = Probable injury, is any injury other than fatal and incapacitating
which is evident to persons, other than the injured, at the scene of the
accident. This includes a lump on the head, abrasions, minor lacerations,
but excludes limping.
- 4 = Incapacitating injury is any injury other than fatal which
prevents the injured person from walking, driving or normally continuing
the activities which he was capable of performing prior to the motor vehicle
traffic accident. This includes severe lacerations, broken or disordered
limbs, skull fracture, crushed chest, internal injuries, unconscious when
taken from accident scene, unable to leave the accident without assistance,
but excludes momentary unconsciousness.
- 5 = Fatal injury is any injury sustained in an accident or is
a result of an accident that causes the death of the injured person.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
SEVERITY Frequency Percent Frequency Percent
-------------------------------------------------------------
Damage only 61327 62.3 61327 62.3
Possible injury 17543 17.8 78870 80.2
Probable injury 10951 11.1 89821 91.3
Incapacitating 7941 8.1 97762 99.4
Fatal at scene 611 0.6 98373 100.0
Motorcycles
Cumulative Cumulative
SEVERITY Frequency Percent Frequency Percent
-------------------------------------------------------------
Damage only 62 7.2 62 7.2
Possible injury 68 7.9 130 15.1
Probable injury 346 40.1 476 55.2
Incapacitating 361 41.8 837 97.0
Fatal at scene 26 3.0 863 100.0
STRENGTHS AND WEAKNESSES:
Determinations of severity are made at the scene of the accident. The only
exception is when a person dies within 30 days as a result of accident injuries.
In these cases an amended supplemental accident report form must be filed to
reflect "severity = 5."
The determination of the level of severity is sometimes difficult to accurately
perform because police officers are not typically skilled in medical assessment.
NAME OF DATA ELEMENT: AX_TYPE
DEFINITION: Type of accident by vehicle
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 1 = Motor vehicle and a pedestrian
- 2 = Motor vehicle and another motor vehicle
- 3 = Motor vehicle and a train
- 4 = Motor vehicle and a bicycle
- 5 = Motor vehicle and a wild animal
- 6 = Motor vehicle and a fixed object
- 7 = Motor vehicle and other object
- 8 = Overturned in roadway
- 9 = Ran off roadway through the median
- D = Motor vehicle and a domestic animal
- L = Ran off roadway - to the left
- R = Ran off roadway - to the right
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
AX_TYPE Frequency Percent Frequency Percent
--------------------------------------------------------------
Unstated 38 0.0 38 0.0
MV- pedestrian 1088 1.1 1126 1.1
MV- MV 79371 80.8 80497 81.9
MV- train 61 0.1 80558 82.0
MV- bicycle 867 0.9 81425 82.9
MV- wild animal 3430 3.5 84855 86.3
MV- fixed object 2302 2.3 87157 88.7
MV- other object 529 0.5 87686 89.2
Overturned 350 0.4 88036 89.6
Off through median 419 0.4 88455 90.0
Non-collision 1957 2.0 90412 92.0
MV- domestic 493 0.5 90905 92.5
Off road left 2913 3.0 93818 95.5
Off road right 4460 4.5 98278 100.0
Frequency Missing = 95
Motorcycles
Cumulative Cumulative
AX_TYPE Frequency Percent Frequency Percent
--------------------------------------------------------------
MV- pedestrian 10 1.2 10 1.2
MV- MV 466 54.0 476 55.2
MV- bicycle 6 0.7 482 55.9
MV- wild animal 14 1.6 496 57.5
MV- fixed object 22 2.5 518 60.0
MV- other object 13 1.5 531 61.5
Overturned 127 14.7 658 76.2
Off through median 10 1.2 668 77.4
Non-collision 60 7.0 728 84.4
MV- domestic 6 0.7 734 85.1
Off road left 32 3.7 766 88.8
Off road right 97 11.2 863 100.0
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: ROADSURFAC
DEFINITION: Roadway surface conditions
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 1 digit character numeric coded describing the
following road surface conditions:
- 1 = Dry
- 2 = Wet
- 3 = Muddy
- 4 = Snowy
- 5 = Icy
- 6 = Oily
The term most nearly describing the condition of the surface of the roadway at
the time of the accident is entered on the Crash report. If more than one
condition applies, the term least favorable to traffic safety is used.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
ROADSURF Frequency Percent Frequency Percent
------------------------------------------------------
Dry 73147 74.6 73147 74.6
Wet 16953 17.3 90100 91.9
Muddy 135 0.1 90235 92.1
Snowy 3527 3.6 93762 95.6
Icy 4204 4.3 97966 99.9
Oily 61 0.1 98027 100.0
Frequency Missing = 346
Motorcycles
Cumulative Cumulative
ROADSURF Frequency Percent Frequency Percent
------------------------------------------------------
Dry 817 95.1 817 95.1
Wet 33 3.8 850 99.0
Muddy 5 0.6 855 99.5
Snowy 1 0.1 856 99.7
Oily 3 0.3 859 100.0
Frequency Missing = 4
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: LIGHT
DEFINITION: Natural light condition at the time of the accident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
The reporting officer uses the term most nearly describing the condition of
natural light at the time of the accident.
This data element is coded as follows:
- 1 = Daylight
- 2 = Dawn
- 3 = Darkness - Street or Highway Not Lighted
- 4 = Darkness - Street or Highway Lighted
- 5 = Dusk
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
LIGHT Frequency Percent Frequency Percent
-------------------------------------------------------------
Daylight 68579 69.9 68579 69.9
Dawn 2165 2.2 70744 72.2
Dark, Unlit 11027 11.2 81771 83.4
Dark, Lighted 13251 13.5 95022 96.9
Dusk 3027 3.1 98049 100.0
Frequency Missing = 324
Motorcycles
Cumulative Cumulative
LIGHT Frequency Percent Frequency Percent
-------------------------------------------------------------
Daylight 590 68.4 590 68.4
Dawn 10 1.2 600 69.6
Dark, Unlit 92 10.7 692 80.3
Dark, Lighted 140 16.2 832 96.5
Dusk 30 3.5 862 100.0
Frequency Missing = 1
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: WEATHER
DEFINITION: Weather conditions at the time of the accident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
The reporting officer uses the term most nearly describing the weather
conditions at the time of the accident. "Clear" means clear skies or when other
terms do not adequately describe the sky.
This data element is coded as follows:
- 1 = Clear
- 2 = Raining
- 3 = Snowing
- 4 = Fog
- 5 = Dust
- 6 = Mist
- 7 = Sleeting
- 8 = Cloudy
- 9 = Windstorm
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
WEATHER Frequency Percent Frequency Percent
-------------------------------------------------------
Clear 65407 66.7 65407 66.7
Raining 9425 9.6 74832 76.3
Snowing 6637 6.8 81469 83.0
Fog 1124 1.1 82593 84.2
Dust 85 0.1 82678 84.3
Mist 516 0.5 83194 84.8
Sleeting 272 0.3 83466 85.1
Cloudy 14411 14.7 97877 99.8
Windstorm 222 0.2 98099 100.0
Frequency Missing = 274
Motorcycles
Cumulative Cumulative
WEATHER Frequency Percent Frequency Percent
-------------------------------------------------------
Clear 728 84.6 728 84.6
Raining 19 2.2 747 86.8
Snowing 2 0.2 749 87.0
Mist 1 0.1 750 87.1
Cloudy 109 12.7 859 99.8
Windstorm 2 0.2 861 100.0
Frequency Missing = 2
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: ROADDEFECT
DEFINITION: Defect in roadway
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
The reporting officer notes any road defect that contributed to the accident.
If no road defect is apparent, an "X" is noted on the Crash form and the data element
is not collected.
- 1 = Defective shoulders
- 2 = Holes, ruts, etc., in surface
- 3 = Loose material on surface
- 4 = Obstruction not lighted (darkness)
- 5 = Obstruction not marked (daylight)
- 6 = Road under construction
- 7 = Roadway repairs (Transportation Department crew)
- 8 = Obstruction - previous accident
- 9 = Other - specified in remarks section of report
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
ROADDEFECT Frequency Percent Frequency Percent
-------------------------------------------------------------
Shoulder ruts 731 11.4 731 11.4
Road ruts/bumps 779 12.1 1510 23.4
Loose material 1273 19.8 2783 43.2
Obstruction-drk 241 3.7 3024 47.0
Obstruction-lit 87 1.4 3111 48.3
Construction 964 15.0 4075 63.3
Road repairs 403 6.3 4478 69.5
Obstr Prev MVA 226 3.5 4704 73.0
Other 1736 27.0 6440 100.0
Frequency Missing = 91933
Motorcycles
Cumulative Cumulative
ROADDEFECT Frequency Percent Frequency Percent
-------------------------------------------------------------
Shoulder ruts 18 14.1 18 14.1
Road ruts/bumps 19 14.8 37 28.9
Loose material 56 43.8 93 72.7
Obstruction-drk 1 0.8 94 73.4
Construction 6 4.7 100 78.1
Road repairs 8 6.3 108 84.4
Other 20 15.6 128 100.0
Frequency Missing = 735
STRENGTHS AND WEAKNESSES:
NAME OF DATA ELEMENT: SUBSEQ1
DEFINITION: First harmful event that occurs after the first damage producing or injury producing event
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
There are other events which occur after the first damage-producing or
injury-producing events which may be significant in defining the accident.
When this is the case, the appropriate code is noted on the Crash report for the
next significant damage or injury producing event in their order of occurrence.
- 1 = Motor vehicle and pedestrian - an accident involving a motor vehicle
in transport and a pedestrian. This does not include a person boarding or
alighting, jumping or falling from a motor vehicle in transport.
- 2 = Motor vehicle and another motor vehicle - any collision accident
involving at least two motor vehicles in transport upon the roadway or upon
roadways within an intersection. This includes collision with a motor vehicle
stopped, or abandoned on a roadway or in an area designated for parking,
and also includes collision with a motor vehicle on another roadway.
- 3 = Motor vehicle and a train - any accident involving a motor vehicle
in transport and a railway train or railway vehicle.
- 4 = Motor vehicle and a bicycle - any accident involving a motor vehicle
in transport and a bicyclist in transport. Bicyclist includes bicycles,
tricycles, unicycles, and any trailers or sidecars attached to a bicycle.
A stopped bicycle is considered to be in transport if it is in readiness
for transport.
- 5 = Motor vehicle and a wild animal - any accident involving a motor
vehicle in transport and a wild animal, i.e., deer, elk, etc.
- 6 = Motor vehicle and a fixed object - any accident involving a motor
vehicle in transport and a fixed object.
- 7 = Motor vehicle and other object - any accident involving a motor
vehicle in transport and any other object which is moveable or moving, but
not fixed. This excludes objects set in motion by cataclysm, lighting or
other natural and environmental factors.
- 8 = Overturned - any accident in which a motor vehicle in transport
overturns for any reason without an antecedent accident or cause. This is
a non collision type accident.
- 9 = Ran off the road though the median - this includes accidents involving
a motor vehicle which becomes out of control and runs off the road without
having hit or been hit by other motor vehicles prior to running off the
road.
- A = Other non-collision - an accident involving a motor vehicle in transport
other than overturning, collision, or running off the road. This includes
accidental poisoning from carbon monoxide generated by a motor vehicle resulting
in injury or further property damage; explosion of any part of the motor
vehicle; falling, jumping or being pushed from the motor vehicle in transport;
hit by or thrown against some part of or object in the motor vehicle in
transport; object falling from or on the motor vehicle in transport; toxic
or corrosive chemicals leaking from the vehicle; striking holes or bumps
in the roadway; driving into water without overturning or colliding.
- R = Ran off the road - right - Ran off roadway to the right side.
- L = Ran off road - left - Ran off roadway to the left side.
- D = Motor vehicle and a domestic animal - any animal of a domestic nature,
herded or not, i.e., horse, cattle, etc.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
SUBSEQ1 Frequency Percent Frequency Percent
-----------------------------------------------------
0 3 0.0 3 0.0
1 95 0.5 98 0.5
2 7755 37.3 7853 37.8
3 47 0.2 7900 38.0
4 19 0.1 7919 38.1
5 20 0.1 7939 38.2
6 5570 26.8 13509 65.0
7 631 3.0 14140 68.1
8 1920 9.2 16060 77.3
9 336 1.6 16396 78.9
A 218 1.0 16614 80.0
D 13 0.1 16627 80.0
L 1717 8.3 18344 88.3
R 2428 11.7 20772 100.0
Frequency Missing = 77601
Motorcycles
Cumulative Cumulative
SUBSEQ1 Frequency Percent Frequency Percent
-----------------------------------------------------
1 2 0.7 2 0.7
2 18 6.0 20 6.7
6 68 22.7 88 29.4
7 13 4.3 101 33.8
8 124 41.5 225 75.3
9 2 0.7 227 75.9
A 13 4.3 240 80.3
L 19 6.4 259 86.6
R 40 13.4 299 100.0
Frequency Missing = 564
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: SUBSEQ2
DEFINITION: Second harmful event that occurs after the first damage producing or injury producing event
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
There are other events which occur after the first damage-producing or
injury-producing events which may be significant in defining the accident.
When this is the case, the appropriate code is noted on the Crash report for the
next significant damage or injury producing event in their order of occurrence.
- 1 = Motor vehicle and pedestrian - an accident involving a motor vehicle
in transport and a pedestrian. This does not include a person boarding or
alighting, jumping or falling from a motor vehicle in transport.
- 2 = Motor vehicle and another motor vehicle - any collision accident
involving at least two motor vehicles in transport upon the roadway or upon
roadways within an intersection. This includes collision with a motor vehicle
stopped, or abandoned on a roadway or in an area designated for parking,
and also includes collision with a motor vehicle on another roadway.
- 3 = Motor vehicle and a train - any accident involving a motor vehicle
in transport and a railway train or railway vehicle.
- 4 = Motor vehicle and a bicycle - any accident involving a motor vehicle
in transport and a bicyclist in transport. Bicyclist includes bicycles,
tricycles, unicycles, and any trailers or sidecars attached to a bicycle.
A stopped bicycle is considered to be in transport if it is in readiness
for transport.
- 5 = Motor vehicle and a wild animal - any accident involving a motor
vehicle in transport and a wild animal, i.e., deer, elk, etc.
- 6 = Motor vehicle and a fixed object - any accident involving a motor
vehicle in transport and a fixed object.
- 7 = Motor vehicle and other object - any accident involving a motor
vehicle in transport and any other object which is moveable or moving, but
not fixed. This excludes objects set in motion by cataclysm, lighting or
other natural and environmental factors.
- 8 = Overturned - any accident in which a motor vehicle in transport
overturns for any reason without an antecedent accident or cause. This is
a non collision type accident.
- 9 = Ran off the road though the median - this includes accidents involving
a motor vehicle which becomes out of control and runs off the road without
having hit or been hit by other motor vehicles prior to running off the
road.
- A = Other non-collision - an accident involving a motor vehicle in transport
other than overturning, collision, or running off the road. This includes
accidental poisoning from carbon monoxide generated by a motor vehicle resulting
in injury or further property damage; explosion of any part of the motor
vehicle; falling, jumping or being pushed from the motor vehicle in transport;
hit by or thrown against some part of or object in the motor vehicle in
transport; object falling from or on the motor vehicle in transport; toxic
or corrosive chemicals leaking from the vehicle; striking holes or bumps
in the roadway; driving into water without overturning or colliding.
- R = Ran off the road - right - Ran off roadway to the right side.
- L = Ran off road - left - Ran off roadway to the left side.
- D = Motor vehicle and a domestic animal - any animal of a domestic nature,
herded or not, i.e., horse, cattle, etc.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
SUBSEQ2 Frequency Percent Frequency Percent
-----------------------------------------------------
1 21 0.3 21 0.3
2 1617 25.8 1638 26.2
3 6 0.1 1644 26.3
4 9 0.1 1653 26.4
6 2085 33.3 3738 59.7
7 167 2.7 3905 62.4
8 1560 24.9 5465 87.3
9 109 1.7 5574 89.0
A 106 1.7 5680 90.7
D 3 0.0 5683 90.8
L 289 4.6 5972 95.4
R 288 4.6 6260 100.0
Frequency Missing = 92113
Motorcycles
Cumulative Cumulative
SUBSEQ2 Frequency Percent Frequency Percent
-----------------------------------------------------
2 1 1.4 1 1.4
6 34 49.3 35 50.7
7 2 2.9 37 53.6
8 26 37.7 63 91.3
A 2 2.9 65 94.2
L 1 1.4 66 95.7
R 3 4.3 69 100.0
Frequency Missing = 794
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: INTERSECT
DEFINITION: Type of intersection where accident occurred
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 3 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- A00 = Four way intersection
- B00 = T intersection to the left
- C00 = T intersection to the right
- D00 = T intersection
- E00 = T intersection
- F00 = Five way intersection
- G00 = Five way intersection
- H00 = Five way intersection
- I00 = Five way intersection
- J00 = Three way intersection
- K00 = Three way intersection
- L00 = Three way intersection
- M00 = Three way intersection
- Z00 = Other intersection
There are numerous types of intersections that are defined in the Utah crash
investigator's manual. Thus, there are 4 different types of three way intersection.
The data analyst will need to consult that manual before attempting to use this
data element.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
INTERSEC Frequency Percent Frequency Percent
------------------------------------------------------
A00 32382 74.5 32382 74.5
B00 2886 6.6 35268 81.1
C00 3111 7.2 38379 88.3
D00 2445 5.6 40824 93.9
E00 2138 4.9 42962 98.8
F00 90 0.2 43052 99.0
G00 46 0.1 43098 99.1
H00 33 0.1 43131 99.2
I00 14 0.0 43145 99.2
J00 78 0.2 43223 99.4
K00 66 0.2 43289 99.5
L00 37 0.1 43326 99.6
M00 36 0.1 43362 99.7
Z00 124 0.3 43486 100.0
Frequency Missing = 54887
Motorcycles
Cumulative Cumulative
INTERSEC Frequency Percent Frequency Percent
------------------------------------------------------
A00 193 64.3 193 64.3
B00 29 9.7 222 74.0
C00 24 8.0 246 82.0
D00 26 8.7 272 90.7
E00 18 6.0 290 96.7
J00 2 0.7 292 97.3
K00 3 1.0 295 98.3
L00 1 0.3 296 98.7
Z00 4 1.3 300 100.0
Frequency Missing = 563
STRENGTHS AND WEAKNESSES:
This data element relies upon the drawings made by the investigating officer
and interpretation by road personnel. This is considered a highly reliable
data element.
NAME OF DATA ELEMENT: TOT_PEOPLE
DEFINITION: Total number of people involved in each incident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 4 Digit Numeric
DATA ELEMENT CONTENT:
This data element is a 4 digit number that represents the total number
of people involved in each incident.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
TOT_PEOP Frequency Percent Frequency Percent
------------------------------------------------------
0 146 0.1 146 0.1
1 6592 6.7 6738 6.8
2 30569 31.1 37307 37.9
3 21156 21.5 58463 59.4
4 14809 15.1 73272 74.5
5 9957 10.1 83229 84.6
6 6479 6.6 89708 91.2
7 3590 3.6 93298 94.8
8 2404 2.4 95702 97.3
9 991 1.0 96693 98.3
10 570 0.6 97263 98.9
11 421 0.4 97684 99.3
12 208 0.2 97892 99.5
13 252 0.3 98144 99.8
14 79 0.1 98223 99.8
16 32 0.0 98255 99.9
17 47 0.0 98302 99.9
18 18 0.0 98320 99.9
19 8 0.0 98328 100.0
22 24 0.0 98352 100.0
30 21 0.0 98373 100.0
Motorcycles
Cumulative Cumulative
TOT_PEOP Frequency Percent Frequency Percent
------------------------------------------------------
1 224 26.0 224 26.0
2 379 43.9 603 69.9
3 161 18.7 764 88.5
4 64 7.4 828 95.9
5 19 2.2 847 98.1
6 11 1.3 858 99.4
7 3 0.3 861 99.8
9 2 0.2 863 100.0
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: LOCALITY
DEFINITION: Description of locale where accident occurred
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
The reporting officer indicates the term which most accurately describes
the locale in which the accident occurred. The accident locality is observed
for about 100 yards, in all directions, from the accident scene.
This data element is coded as follows:
- 1 = Manufacturing or industrial: Applies to area with large concentration
of warehouses, factories, railroad stations, truck terminals, etc.
- 2 = Shopping or business: Areas with large number of office buildings
or stores.
- 3 = Residential: Means typical residential districts, possible with
an occasional church, store, etc.
- 4 = School: Applies to any area that is designated by speed limits or
signs as a school area.
- 5 = Farms and fields: Applies to land adjacent to the highways when
highly developed into farms and fields, and those buildings used in connection
there with, such as barns.
- 6 = Open country: Applies to raw land with no particular development
of any kind, i.e., undeveloped forest, etc.
- 7 = Church: Church grounds and vicinity.
- 8 = Playground: Any type of playground other than school.
- 9 = Railroad track: A railroad crossing or other access areas with railroad
tracks.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
LOCALITY Frequency Percent Frequency Percent
-------------------------------------------------------------
Industrial 4836 4.9 4836 4.9
Business/Shops 41490 42.3 46326 47.2
Residential 27149 27.7 73475 74.9
School 2627 2.7 76102 77.6
Farms/Fields 5946 6.1 82048 83.6
Open country 15607 15.9 97655 99.6
Church 181 0.2 97836 99.7
Playground 73 0.1 97909 99.8
Railroad tracks 183 0.2 98092 100.0
Frequency Missing = 281
Motorcycles
Cumulative Cumulative
LOCALITY Frequency Percent Frequency Percent
-------------------------------------------------------------
Industrial 42 4.9 42 4.9
Business/Shops 296 34.4 338 39.3
Residential 269 31.2 607 70.5
School 35 4.1 642 74.6
Farms/Fields 54 6.3 696 80.8
Open country 160 18.6 856 99.4
Church 5 0.6 861 100.0
Frequency Missing = 2
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: TRFCONTROL
DEFINITION: Traffic control devices in effect at accident site
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
Traffic control devices indicated are only those that would or should have the
effect of regulating the motor vehicles that were involved in the accident.
This data element is coded as follows:
- 1 = Officer
- 2 = Flagman
- 3 = Traffic signal
- 4 = Flashing signal
- 5 = Stop sign
- 6 = Yield sign
- 7 = Rail gates
- 8 = Other
- 9 = No control
- A = Slow sign
- B = Lanes marked
- C = No passing
- D = One way road
- E = Construction
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
TRFCONTR Frequency Percent Frequency Percent
-------------------------------------------------------------
Officer 377 0.4 377 0.4
Flagman 420 0.4 797 0.8
Traffic signal 22976 23.6 23773 24.4
Flashing signal 518 0.5 24291 24.9
Stop sign 12604 12.9 36895 37.9
Yield sign 936 1.0 37831 38.8
Rail gates 147 0.2 37978 39.0
Other 631 0.6 38609 39.6
No control 30996 31.8 69605 71.4
Slow sign 538 0.6 70143 72.0
Lanes marked 25600 26.3 95743 98.3
No passing 642 0.7 96385 98.9
One way road 504 0.5 96889 99.4
Construction 542 0.6 97431 100.0
Frequency Missing = 942
Motorcycles
Cumulative Cumulative
TRFCONTR Frequency Percent Frequency Percent
-------------------------------------------------------------
Officer 8 0.9 8 0.9
Flagman 4 0.5 12 1.4
Traffic signal 102 12.0 114 13.4
Flashing signal 3 0.4 117 13.7
Stop sign 80 9.4 197 23.1
Yield sign 3 0.4 200 23.4
Other 1 0.1 201 23.6
No control 396 46.4 597 70.0
Slow sign 6 0.7 603 70.7
Lanes marked 230 27.0 833 97.7
No passing 16 1.9 849 99.5
One way road 2 0.2 851 99.8
Construction 2 0.2 853 100.0
Frequency Missing = 10
STRENGTHS AND WEAKNESSES:
This data element is considered to be highly reliable by the Department
of Public Safety personnel.
NAME OF DATA ELEMENT: ROAD_CHAR
DEFINITION: Characteristics of the road at the accident location
SOURCE FILE: Crash file
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 1 = Straight - level - means roads that are for all practical purposes,
straight and level.
- 2 = Straight - grade - means roads that are straight, but have an obvious
upgrade or downgrade.
- 3 = Straight - hillcrest - means a road that is straight at the top
of a hill.
- 4 = Curve - level - means the roadway turned or deviated from a straight
line, but has no upgrade or downgrade involved.
- 5 = Curve - grade - means any conditions of curvature that could not
properly be called straight, with an obvious upgrade or downgrade on the
road.
- 6 = Curve - hill crest - means roadway turned or deviated from a straight
line at the crest of a hill.
- 7 = Dip - straight - means all roadways are straight but are not level.
- 8 = Dip - curved - means all roadways turn or deviate and are not level.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
ROAD_CHA Frequency Percent Frequency Percent
--------------------------------------------------------------
Straight, level 70690 72.0 70690 72.0
Grade straight 15601 15.9 86291 87.9
Hill crest straig 1745 1.8 88036 89.7
Curve level 4163 4.2 92199 94.0
Curve grade 5284 5.4 97483 99.3
Curve hill crest 390 0.4 97873 99.7
Dip straight 201 0.2 98074 99.9
Dip curve 54 0.1 98128 100.0
Frequency Missing = 245
Motorcycles
Cumulative Cumulative
ROAD_CHA Frequency Percent Frequency Percent
--------------------------------------------------------------
Straight, level 539 62.7 539 62.7
Grade straight 109 12.7 648 75.3
Hill crest straig 19 2.2 667 77.6
Curve level 74 8.6 741 86.2
Curve grade 111 12.9 852 99.1
Curve hill crest 4 0.5 856 99.5
Dip curve 4 0.5 860 100.0
Frequency Missing = 3
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: TIMEARRIVE
DEFINITION: Time that the first law enforcement officer arrived at the scene of the accident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 4 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 4 character number. This data element is used by
the reporting agency in conjunction with the data element "TIME NOTIFIED" for
the purpose of evaluating quality assurance programs.
STATISTICAL ANALYSIS:
Not applicable.
STRENGTHS AND WEAKNESSES:
Not applicable.
NAME OF DATA ELEMENT: TIMENOTIFY
DEFINITION: Time that the first law enforcement agency was notified of the accident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 4 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 4 character number. This data element is used by the
reporting agency in conjunction with the data element "TIME ARRIVED" for the purpose
of evaluating quality assurance programs.
STATISTICAL ANALYSIS:
Not applicable.
STRENGTHS AND WEAKNESSES:
Not applicable.
NAME OF DATA ELEMENT: COUNTY
DEFINITION: County where accident occurred
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 3 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 3 digit character number coded as follows:
- 001 = Beaver
- 003 = Box Elder
- 005 = Cache
- 007 = Carbon
- 009 = Daggett
- 011 = Davis
- 013 = Duchesne
- 015 = Emery
- 017 = Garfield
- 019 = Grand
- 021 = Iron
- 023 = Juab
- 025 = Kane
- 027 = Millard
- 029 = Morgan
- 031 = Piute
- 033 = Rich
- 035 = Salt Lake
- 037 = San Juan
- 039 = Sanpete
- 041 = Sevier
- 043 = Summit
- 045 = Tooele
- 047 = Uintah
- 049 = Utah
- 051 = Wasatch
- 053 = Washington
- 055 = Wayne
- 057 = Weber
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
COUNTY Frequency Percent Frequency Percent
--------------------------------------------------------
Beaver 444 0.5 444 0.5
Box Elder 1883 1.9 2327 2.4
Cache 4016 4.1 6343 6.5
Carbon 669 0.7 7012 7.2
Daggett 66 0.1 7078 7.3
Davis 7241 7.4 14319 14.7
Duchesne 611 0.6 14930 15.3
Emery 385 0.4 15315 15.7
Garfield 199 0.2 15514 15.9
Grand 346 0.4 15860 16.3
Iron 1260 1.3 17120 17.6
Juab 385 0.4 17505 18.0
Kane 311 0.3 17816 18.3
Millard 865 0.9 18681 19.2
Morgan 244 0.3 18925 19.4
Piute 60 0.1 18985 19.5
Rich 131 0.1 19116 19.6
Salt Lake 48788 50.1 67904 69.7
San Juan 409 0.4 68313 70.1
Sanpete 670 0.7 68983 70.8
Sevier 899 0.9 69882 71.7
Summit 1135 1.2 71017 72.9
Tooele 1015 1.0 72032 73.9
Uintah 823 0.8 72855 74.8
Utah 13042 13.4 85897 88.2
Wasatch 817 0.8 86714 89.0
Washington 2403 2.5 89117 91.5
Wayne 108 0.1 89225 91.6
Weber 8189 8.4 97414 100.0
Frequency Missing = 959
Motorcycles
Cumulative Cumulative
COUNTY Frequency Percent Frequency Percent
--------------------------------------------------------
Beaver 6 0.7 6 0.7
Box Elder 11 1.3 17 2.0
Cache 42 4.9 59 6.9
Carbon 10 1.2 69 8.0
Daggett 3 0.3 72 8.4
Davis 49 5.7 121 14.1
Duchesne 10 1.2 131 15.3
Emery 4 0.5 135 15.7
Garfield 2 0.2 137 16.0
Grand 3 0.3 140 16.3
Iron 8 0.9 148 17.2
Juab 4 0.5 152 17.7
Kane 3 0.3 155 18.1
Millard 1 0.1 156 18.2
Morgan 2 0.2 158 18.4
Piute 3 0.3 161 18.8
Rich 2 0.2 163 19.0
Salt Lake 390 45.5 553 64.5
San Juan 9 1.0 562 65.5
Sanpete 7 0.8 569 66.3
Sevier 6 0.7 575 67.0
Summit 15 1.7 590 68.8
Tooele 9 1.0 599 69.8
Uintah 11 1.3 610 71.1
Utah 142 16.6 752 87.6
Wasatch 5 0.6 757 88.2
Washington 27 3.1 784 91.4
Weber 74 8.6 858 100.0
Frequency Missing = 5
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: SINGLE_FLG
DEFINITION:
SOURCE FILE: Calculated flag (algorithm described below)
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Numeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
PROGRAMMING ALGORITHM:
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
SINGLE_F Frequency Percent Frequency Percent
------------------------------------------------------------
Multi vehicle 81563 82.9 81563 82.9
Single vehicle 16810 17.1 98373 100.0
Motorcycles
STRENGTHS AND WEAKNESSES:
NAME OF DATA ELEMENT: ALC_FLAG
DEFINITION: Flag indicating alcohol involved in accident
SOURCE FILE: Calculated flag (algorithm described below)
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Numeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
0 No alcohol involved
1 Alcohol involved
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
ALC_FLAG Frequency Percent Frequency Percent
--------------------------------------------------------------
No alcohol 95613 97.2 95613 97.2
Alcohol involved 2760 2.8 98373 100.0
STRENGTHS AND WEAKNESSES:
This field does NOT mean that the specific occupant was using alcohol.
The field means that this occupant was involved in a vehicle in which alcohol
was considered a factor by the investigating officer. Thus, if one drunk
driver was involved in an accident with 9 other occupants, all ten records
will have this flag set to a value of one.
NAME OF DATA ELEMENT: INTER
DEFINITION: Flag for whether accident occured in intersection
SOURCE FILE: Calculated flag (algorithm described below)
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Numeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
0 = Accident occurred at an intersection
1 = Accident did not occur at an intersection
PROGRAMMING ALGORITHM:
replace all inter with 0 for empty(intersect)
replace all inter with 1 for !empty(intersect)
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
INTER Frequency Percent Frequency Percent
--------------------------------------------------------------
Non intersection 54887 55.8 54887 55.8
Intersection 43486 44.2 98373 100.0
STRENGTHS AND WEAKNESSES:
NAME OF DATA ELEMENT: ROLL
DEFINITION: Flag indicating rollover accident type
SOURCE FILE: Calculated flag (algorithm described below)
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 8 Digit Numeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
0 = No rollover
1 = Rollover
PROGRAMMING ALGORITHM:
replace all roll with 0
replace all roll with 1 for ax_type = '8' or subseq1 = '8' or subseq2 =
'8'
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
ROLL Frequency Percent Frequency Percent
---------------------------------------------------------
No rollover 94552 96.1 94552 96.1
Rollover 3821 3.9 98373 100.0
STRENGTHS AND WEAKNESSES:
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