Transcript MMUCC Model Minimum Uniform Crash Criteria

MMUCC
Model Minimum Uniform Crash
Criteria
Crash Data Elements
Scott R. Falb
Traffic Records Forum
July, 2003
Original MMUCC Crash Data
Elements (1998)
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Eighteen Collected Data Elements
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Crash date & time, location, city and county, first
harmful event information, light & weather
conditions, reporting agency information, work
zone and school bus related.
Eight Derived Data Elements
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Crash severity, day of the week and number of:
vehicles, motorists, non-motorists, fatalities &
injuries.
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Nineteen Collected Data Elements
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Edition MMUCC Crash Data
Elements (2003)
Crash date & time, location, city and county, first
harmful event information, light & weather
conditions, reporting agency information, type of
intersection, relation to junction, work zone and
school bus related.
Nine Derived Data Elements
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Crash severity, day of the week alcohol/drug
involvement and number of: vehicles, motorists,
non-motorists, fatalities & injuries.
Changes Made to 1st Ed. MMUCC
Guideline in 2nd Edition
C1- Crash Case Identifier
C2- Crash Date & Time
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C3- Crash County
C4-Crash City/Place
C5-Crash Location
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C6-First Harmful Event
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C7-Location of FHE
C8-Manner of Collision
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No Change
New Definition: 00:00 Start;
time: 00:00-23:59
FIPS Code Reference
FIPS Code Reference
Lat/Long; LRS; Link Node
New Def: Loc. Of FHE
(First Harmful Event)
Added new attributes;
coordinated with MHE
Added new attributes
Clarified element: two
vehicles
Changes Made to 1st Ed. MMUCC
Guideline in 2nd Edition
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C9-Source of Information
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C10-Date/Time Reported to
Law Enforcement
C11-Weather Conditions
C12-Light Conditions
C13-Roadway Surface
Cond.
C14-Cont. Circum.-Environ.
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C15-Cont. Circum.-Road
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Added subfields for agency
ID
Focus Changed-When
Agency was notified
No Change
Def. Changed: type/level
o/light
Added ice/frost, sand, oil
Expanded entries: one to
three
Expanded entries: one to
three
Changes Made to 1st Ed. MMUCC
Guideline in 2nd Edition
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C16-Relation to Junction
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C17-Type of Intersection
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C18-School Bus Related
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C19-Work Zone Related
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New data element split from
original “Type of Roadway
Junction.” Added new
attributes
New Data element split from
original “Type of Roadway
Junction.” Interchange
intersection added
Expand Definition to include
motor vehicles used as
school bus
No Change
Changes Made to 1st Ed. MMUCC
Guideline in 2nd Edition--Derived
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CD1-Crash Severity
CD2-Number of Motor
Vehicles
CD3-Number of Motorists
CD4-Number of Nonmotorists
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CD5-Number of Injured
Persons
CD6-Number of Fatalities
CD7-Alcohol Involvement
CD8-Drug Involvement
CD9-Day of the Week
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New Attributes-Injury level
New Name/New Definition
Changed motorist to
occupant
Changed non-motorist to
non-occupant
Include Injury levels
Changed Name
Split into Alcohol
Involvement
Split into Drug Involvement
No Change
Questions These Data
Elements Attempt to Answer
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Which Crash is this?
When and Where did the crash take place
What was the First Harmful Event? Where
did it occur?
Who investigated?
What were the Contributing Circumstances?
At what type of Road Junction?
What use is the Right Data?
Identify & prioritize highway and traffic
safety problem areas
 Evaluate the effectiveness of laws and
policies designed to save lives
 Initiate new laws and policies designed
to save lives and prevent injuries
 Support the development and execution
of safety countermeasures
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What Use Is Common Data?
Many state’s data may provide too few
cases alone
 Multi-state data is often needed to
evaluate different safety environments.
 Multi-state data can point to regional or
nation-wide problems
 Multi-state data can be used to evaluate
the effectiveness of different solutions
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