4th Edition Modified Elements
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C15. Contributing Circumstances, Road


Definition:

Apparent condition of the road which may have contributed to the crash.
Element Attributes:

Subfield 1: Road Circumstances 1

None
Backup Due to Prior Crash
Backup Due to Prior Non-Recurring Incident
Backup Due to Regular Congestion
Toll Booth/Plaza Related
Road Surface Condition (wet, icy, snow, slush, etc.)
Debris
Ruts, Holes, Bumps
Work Zone (construction/maintenance/utility)
Worn, Travel-Polished Surface
Obstruction in Roadway
Traffic Control Device Inoperative, Missing, or Obscured
Shoulder (none, low, soft, high)
Non-Highway Work
Other
Unknown
Subfield 2: Road Circumstances 2

See attributes in Subfield 1
Subfield 3: Road Circumstances 3

See attributes in Subfield 1


Rationale:

Important to determine highway maintenance and possible engineering needs.