Scale and Scope of Safety Assessment Methods in the Project Development Process

Worksheet 1B – Crash Modification Factors for Rural Two-Lane Two-Way Roadway Segments

Worksheet containing following information.

1. CMF for Lane Width
   • CMF 1r
   • from Equation 10-11
   • 1.17
2. CMF for Shoulder Width and Type
   • CMF 2r
   • from Equation 10-12
   • 1.29
3. CMF for Horizontal Curves
   • CMF 3r
   • from Equation 10-13
   • 1.00
4. CMF for Superelevation
   • CMF 4r
   • from Equation 10-14, 10-15, or 10-16
   • 1.00
5. CMF for Grades
   • CMF 5r
   • from Equation 10-11
   • 1.00
6. CMF for Driveway Density
   • CMF 6r
   • from Equation 10-17
   • 1.00
7. CMF for Centerline Rumble Strips
   • CMF 7r
   • from Section 10.7.1
   • 1.00
8. CMF for Passing Lanes
   • CMF 8r
   • from Section 10.7.1
   • 1.00
9. CMF for Two-Way Left-Turn Lane
   • CMF 9r
   • from Equation 10-18 & 10-19
   • 1.00
10. CMF for Roadside Design
    • CMF 10r
    • from Equation 10-20
    • 1.00
11. CMF for Lighting
    • CMF 11r
    • from Equation 10-21
    • 1.00
12. CMF for Automated Speed Enforcement
    • CMF 12r
    • from Section 10.7.l
    • 1.00
13. Combined CMF
    • CMF Comb
    • (1)x(2)x … x(11)x(12)
    • 1.509

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