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Model Inventory of Roadway Elements – MIRE, Version 1.0
MIRE Elements
This section presents a listing of the MIRE elements. The elements are broken down into three main sections: I. Roadway Segment Descriptors, II. Roadway Alignment Descriptors and III. Roadway Junction Descriptors. At the beginning of each section is a listing of the elements in that section, followed by detailed information for each element. Appendix A shows an alphabetical listing of the 202 MIRE elements.
I. Roadway Segment Descriptors
I.a. Segment Location/Linkage Elements
- County Name
- County Code
- Highway District
- Type of Governmental Ownership
- Specific Governmental Ownership
- City/Local Jurisdiction Name
- City/Local Jurisdiction Urban Code
- Route Number
- Route/Street Name
- Begin Point Segment Descriptor
- End point Segment Descriptor
- Segment Identifier
- Segment Length
- Route Signing
- Route Signing Qualifier
- Coinciding Route Indicator
- Coinciding Route — Minor Route Information
- Direction of Inventory
I.b. Segment Classification
- Functional Class
- Rural/Urban Designation
- Federal Aid/Route Type
- Access Control
I.c. Segment Cross Section
- Surface Type
- Total Paved Surface Width
- Surface Friction
- Surface Friction Date
- Pavement Roughness/Condition
- Pavement Roughness Date
- Pavement Condition (Present Serviceability Rating)
- Pavement Condition (PSR) Date
- Number of Through Lanes
- Outside Through Lane Width
- Inside Through Lane Width
- Cross Slope
- Auxiliary Lane Presence/Type
- Auxiliary Lane Length
- HOV Lane Presence/Types
- HOV Lanes
- Reversible Lanes
- Presence/Type of Bicycle Facility
- Width of Bicycle Facility
- Number of Peak Period Through Lanes
- Right Shoulder Type
- Right Shoulder Total Width
- Right Paved Shoulder Width
- Right Shoulder Rumble Strip Presence/Type
- Left Shoulder Type
- Left Shoulder Total Width
- Left Paved Shoulder Width
- Left Shoulder Rumble Strip Presence/Type
- Sidewalk Presence
- Curb Presence
- Curb Type
- Median Type
- Median Width
- Median Barrier Presence/Type
- Median (Inner) Paved Shoulder Width
- Median Shoulder Rumble Strip Presence/Type
- Median Sideslope
- Median Sideslope Width
- Median Crossover/Left Turn Lane Type
I.d. Segment Roadside Descriptors
- Roadside Clearzone Width
- Right Sideslope
- Right Sideslope Width
- Left Sideslope
- Left Sideslope Width
- Roadside Rating
- Major Commercial Driveway Count
- Minor Commercial Driveway Count
- Major Residential Driveway Count
- Minor Residential Driveway Count
- Major Industrial/Institutional Driveway Count
- Minor Industrial/Institutional Driveway Count
- Other Driveway Count
I.e. Other Segment Descriptors
- Terrain Type
- Number of Signalized Intersections in Segment
- Number of Stop-Controlled Intersections in Segment
- Number of Uncontrolled/Other Intersections in Segment
I.f. Segment Traffic Flow Data
- Annual Average Daily Traffic (AADT)
- AADT Year
- AADT Annual Escalation Percentage
- Percent Single Unit Trucks or Single Truck AADT
- Percent Combination Trucks or Combination Truck AADT
- Percentage Trucks or Truck AADT
- Total Daily Two-Way Pedestrian Count/Exposure
- Bicycle Count/Exposure
- Motorcycle Count or Percentage
- Hourly Traffic Volumes (or Peak and Offpeak AADT)
- K-Factor
- Directional Factor
I.g. Segment Traffic Operations/Control Data
- One/Two-Way Operations
- Speed Limit
- Truck Speed Limit
- Nighttime Speed Limit
- 85th Percentile Speed
- Mean Speed
- School Zone Indicator
- On-Street Parking Presence
- On-Street Parking Type
- Roadway Lighting
- Toll Facility
- Edgeline Presence/Width
- Centerline Presence/Width
- Centerline Rumble Strip Presence/Type
- Passing Zone Percentage
I.h. Other Supplemental Segment Descriptors
- Bridge Numbers for Bridges in Segment
II. Roadway Alignment Descriptors
II.a. Horizontal Curve Data
- Curve Identifiers and Linkage Elements
- Curve Feature Type
- Horizontal Curve Degree or Radius
- Horizontal Curve Length
- Curve Superelevation
- Horizontal Transition/Spiral Curve Presence
- Horizontal Curve Intersection/Deflection Angle
- Horizontal Curve Direction
II.b. Vertical Grade Data
- Grade Identifiers and Linkage Elements
- Vertical Alignment Feature Type
- Percent of Gradient
- Grade Length
- Vertical Curve Length
III. Roadway Junction Descriptors
III.a. At-Grade Intersection/Junctions
General Descriptors
- Unique Junction Identifier
- Type of Intersection/Junction
- Location Identifier for Road 1 Crossing Point
- Location Identifier for Road 2 Crossing Point
- Location Identifier for Additional Road Crossing Points
- Intersection/Junction Number of Legs
- Intersection/Junction Geometry
- School Zone Indicator
- Railroad Crossing Number
- Intersecting Angle
- Intersection/Junction Offset Distance
- Intersection/Junction Traffic Control
- Signalization Presence/Type
- Intersection/Junction Lighting
- Circular Intersection — Number of Circulatory Lanes
- Circular Intersection — Circulatory Lane Width
- Circular Intersection — Inscribed Diameter
- Circular Intersection — Bicycle Facility
Approach Descriptors (Each Approach)
- Intersection Identifier for this Approach
- Unique Approach Identifier
- Approach AADT
- Approach AADT Year
- Approach Mode
- Approach Directional Flow
- Number of Approach Through Lanes
- Left Turn Lane Type
- Number of Exclusive Left Turn Lanes
- Amount of Left Turn Lane Offset
- Right Turn Channelization
- Traffic Control of Exclusive Right Turn Lanes
- Number of Exclusive Right Turn Lanes
- Length of Exclusive Left Turn Lanes
- Length of Exclusive Right Turn Lanes
- Median Type at Intersection
- Approach Traffic Control
- Approach Left Turn Protection
- Signal Progression
- Crosswalk Presence/Type
- Pedestrian Signalization Type
- Pedestrian Signal Special Features
- Crossing Pedestrian Count/Exposure
- Left/Right Turn Prohibitions
- Right Turn-On-Red Prohibitions
- Left Turn Counts/Percent
- Year of Left Turn Counts/Percent
- Right Turn Counts/Percent
- Year of Right Turn Counts/Percent
- Transverse Rumble Strip Presence
- Circular Intersection — Entry Width
- Circular Intersection — Number of Entry Lanes
- Circular Intersection — Presence/Type of Exclusive Right Turn Lane
- Circular Intersection — Entry Radius
- Circular Intersection — Exit Width
- Circular Intersection — Number of Exit Lanes
- Circular Intersection — Exit Radius
- Circular Intersection — Pedestrian Facility
- Circular Intersection — Crosswalk Location
- Circular Intersection — Island Width
III.b. Interchange and Ramp Descriptors
- Unique Interchange Identifier
- Location Identifier for Road 1 Crossing Point
- Location Identifier for Road 2 Crossing Point
- Location Identifier for Additional Road Crossing Points
- Interchange Type
- Interchange Lighting
- Interchange Entering Volume
- Interchange Identifier for this Ramp
- Unique Ramp Identifier
- Ramp Length
- Ramp Acceleration Lane Length
- Ramp Deceleration Lane Length
- Ramp Number of Lanes
- Ramp AADT
- Year of Ramp AADT
- Ramp Metering
- Ramp Advisory Speed Limit
- Roadway Type at Beginning Ramp Terminal
- Roadway Feature at Beginning Ramp Terminal
- Location Identifier for Roadway at Beginning Ramp Terminal
- Location of Beginning Ramp Terminal Relative to Mainline Flow
- Roadway Type at Ending Ramp Terminal
- Roadway Feature at Ending Ramp Terminal
- Location Identifier for Roadway at Ending Ramp Terminal
- Location of Ending Ramp Terminal Relative to Mainline Flow
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