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Topic 4 – Predictive Method HSM Volume 2 CEE 763. HSM PREDICTIVE METHOD. Estimate expected crash frequency Use SPF and CMF SPF for base conditions HSM includes SPF for three types of facilities. SPF for Urban/Suburban Arterial Intersections. Intersection type: 3ST, 4ST, 3SG, 4SG
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Topic 4 – Predictive Method HSM Volume 2 CEE 763
HSM PREDICTIVE METHOD • Estimate expected crash frequency • Use SPF and CMF • SPF for base conditions • HSM includes SPF for three types of facilities
SPF for Urban/Suburban Arterial Intersections • Intersection type: 3ST, 4ST, 3SG, 4SG • SPF to forecast four types of collision: • Multiple vehicle • Single vehicle • Vehicle-pedestrian • Vehicle-bicycle • Total expected crash will be the sum of all four collision types
SPF for Multiple-vehicle Collision • SPF form
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