Relationships Between Asset Management and Travel Demand:
Findings and Recommendations from Four State DOT Site Visits
Appendix A: Performance Measures
North Carolina
Bridges
| Asset | Performance Measure |
|---|
| Deficient Bridges | % of bridges exceed the national average |
| Bridge Decks | % of decks rating <6 |
| Superstructure | % of superstructure rating <6 |
| Substructure | % of substructure rating <6 |
| NBIS Culverts | % of culverts rating <6 |
| Non-NBIS Culverts | % of culverts rated "good" |
| Overhead Signs Structures | % of culverts sign structures rated "good" |
| Drawbridge Machinery | % of moveable spans with rating <7 |
| Tunnels | Condition rating |
Maintenance
| Asset | Performance Measure |
|---|
| Low Shoulder | LF that's ≥ 2 inches |
| High Shoulder | LF that's ≥ 1 inch |
| Lateral Ditches | LF that's blocked, eroded, etc. |
| Crossline Pipes (Blocked) | Number of pipes blocked |
| Crossline Pipes (Damaged) | Number of pipes damaged |
| Curb & Gutter (Blocked) | LF that's blocked |
| Curb & Gutter (Damaged) | LF that's damaged |
| Drop Inlets, CB's etc. (Blocked) | Number of inlets blocked |
| Drop Inlets, CB's etc. (Damaged) | Number of inlets damaged |
| Guardrail/Cable Rail/Concrete Median Rail | LF that's damaged |
| Attenuators | Number of not functioning properly |
| Snow and Ice | Time to bare pavement |
Roadside
| Asset | Performance Measure |
|---|
| Mowing | Average grass height |
| Brush & Tree Control | % encroaching on clearance zone |
| Turf condition | % of area with poor turf |
| Miscellaneous Vegetation Management | % of area with uncontrolled growth |
| Litter & Debris | Number of pieces of litter or debris |
| Storm Water Devices | % of devices not functioning |
| Landscape Bed Maintenance | % of area needing maintenance |
| ROW Fence | % of fence needing maintenance |
| Rest Area & Welcome Centers | Condition rating |
Pavements
| Asset | Performance Measure |
|---|
| IRI | % of LM that's > 145 or PCS severe |
| Pavement Condition Rating | % of RM < 80 |
| Lane Width | % of lane width < AASHTO standards |
| Pavement Shoulder Condition | % of shoulder miles in poor condition |
| Rigid CRC Pavement | % of road miles < good |
| Paved Shoulder Width | % of paved shoulder < paved shoulder policy |
Traffic and ITS
| Asset | Performance Measure |
|---|
| Long Line Pavement Markings | LF visible at night |
| Pavement Markers | % present and reflective |
| Signs (including lights) | % visible and legible |
| Roadway lighting | % operational |
| Traffic Signals | Composite score (operations) |
| Traffic Signals | Composite score (routine maintenance) |
| Traffic Signals | Composite score (emergency response) |
| Highway Free flow | Incident clearance time |
| Dynamic Message Sign | % incident advised with time frame |
Michigan
| Asset | Performance Measure |
|---|
| Roadway |
- Ride quality - smoothness for motorist
- Crack severity - structural deterioration
- Wheel rut paths - depressions in pavement
- % of roads that are not built to all-weather standards
|
| Runways |
- PCI measures of defects - range from 0-100
- Classifications of "good" and "poor"
- % "having" or "not having" complete system including: runway length, width, surface types, lighting system, taxi system, safety areas, and visual approach aides
|
| Bridges |
- % visible and legible Identify as "good" or "poor"
|
| Buses |
- Vehicle mileage and age
- Number of buses eligible for replacement compared to % not being replaced
- Based on age, the number of buses eligible for replacement
- % underfunded
|
| Safety |
- Number of accidents per 100 million vehicle miles traveled
- Number of accidents per year
- Rail grade crossing property damage
- Facility crashes
|
| Level of Services |
- Average trip speed; total travel time; passenger, vehicle, or freight delay; vehicle miles of travel; person miles traveled; average daily traffic capacity
- Measurement of transit use on a per capita basis
- Number of passenger terminals served by 2+ modes
|
| Intermodal Facilities |
- Number of facilities with direct connections to NHS
|
| ITS |
- Usage - calls, web site hits
- Service Times
|
Utah
| Asset | Performance Measure |
|---|
| Pavements | - % of roads in "good" or "fair" condition - 90% interstate, 70% arterial, 50% collector
|
| Bridges | - 65% of bridges in "very good" condition, 25% in "good," and 10% in "fair"
|
| Snow and Ice Removal | - Letter grade to snow removal efforts
|
| Signing and Striping | - Letter grade for visibility rating
|
| Traveler Information Systems | - Increases usage of 511 and CommuterLink by 10%/year
|
| Incident Management Systems | - Speed accidents are cleared
|
| Safety |
- Reduce fatalities by 2%/year
- Reduce pedestrian fatalities by 2%/year
- Number of accidents
- Severity of accidents
|
| Level of Service | |
Updated: 11/06/2012
