1. Continuous Friction Measurement Equipment As a Tool for Improving Crash Rate Prediction
Kevin Wright

2. Researchers Kevin McGhee – VTRC Associate Principal Research Scientist
Dr. Edgar De Leon Izeppi – VTTI
Dr. Samer Katicha - VTTI
Dr. Gerardo Flintsch - VTTI
Ross McCarthy - VTTI

3. Project Genesis Pavement Friction Management
FHWA Technical Advisory
Pavement Friction Management
Recommended the use of continuous friction measuring equipment (CFME)
Contrast CFME against traditional systems

4. Research Performed District level pilot 2000 lane miles
Linked friction data to crash data
Performed economic analysis

5. Research Results
A network analysis of friction-related crashes can effectively incorporate all crash types, not just wet crashes
CFME accommodates coupling of crash data with pavement friction data
Pavement friction and curve data can be incorporated into standard safety performance functions (SPFs)
The total economic savings through friction enhancement can be considerable

6. Research Recommendations
CFME use should be expanded to monitor pavement skid resistance
Pavement friction should be incorporated in SPFs
Additional work to use macro-texture and geometrics to improve crash rate estimates
Use improved SPFs to evaluate and recommend treatment options

7. Implementation Status
Collecting continuous data on Interstate highway system (1,100 miles)
Using FHWA’s Sideway-Force Coefficient Routine Investigation Machine (SCRIM)

8. Case Study I-81 MM 167-169 Problem section
Reduction of 8-12 crashes per year
Savings of up to $2.3 million

9. Value Decreased: Crashes Property Damage Injuries Deaths
Research Costs - $175K + $200K

10. Thank You!
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