Data Elements
There are a total of 202 elements that comprise the MIRE listing. These elements are divided among three broad categories: roadway segments, roadway alignment, and roadway junctions. Examples of the MIRE data elements:
- Roadway classification
- Paved surface characteristics
- Number and type of travel lanes
- Shoulder, median, and roadside descriptors
- Curve and grade information
- Traffic control devices
- Intersection features
- Interchange and ramp descriptors
- Pedestrian and bicyclist facilities
- Traffic volumes
A full listing of the MIRE elements are in the MIRE Version 1.0 report (PDF, 2.9 MB)
Supplemental Databases
The elements in MIRE are envisioned as the elements to be included in agencies’ roadway and traffic inventories. However, MIRE does not contain all inventory data needed for all safety decisions that might need to be made. The composition of MIRE was purposefully designed to link with supplemental databases including:
- Roadside fixed objects
- Signs
- Speed data
- Automated enforcement devices
- Land use elements related to safety
- Bridge descriptors
- Railroad grade-crossing descriptors
- Safety improvements
