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Table 4 An illustrative example of calculation of the total effect on fatalities based on percent coefficients
From: A headway to improve PTW rider safety within the EU through three types of ITS
Mechanism | Effect on fatalities | Effect, % | Coefficient of efficiency |
|---|---|---|---|
Mechanism 1 | Decreases | −10% | 0.90 |
Mechanism 3 | Increases | + 0.5% | 1.005 |
Mechanism 6 | Increases | + 2% | 1.02 |
Total medium effect | −8% ← (0.90*1.005*1.02 = 0.92) | ||
Total medium effect with 80% usage | −8%*80% = −6.4% | ||
Total medium effect with 60% penetration rate | −6.4%*60% = −3.8% | ||