The coding of this data element is based on the location of the first harmful event of the crash. It identifies the crash’s location with respect to presence in a junction or proximity to components typically in junction or interchange areas. See Appendices G and H.
Subfield 1: Within Interchange Area
Subfield 2: Specific location
Entrance / Exit Ramp
Entrance / Exit Ramp-Related
Railway Grade Crossing
Shared-Use Path or Trail
Acceleration / Deceleration Lane
Other Location Not Listed Above Within an Interchange Area (median, shoulder and roadside)
Important for site-specific safety studies to identify locations with actual or potential problems.