In the final analysis, the relationship between misjudgment accidents and vehicle speed is examined. The speed at which the driver becomes aware of danger is used in this analysis.
Table 7 displays the number and incidence of misjudgment accidents by speed. Vehicle speed is grouped into three ranges: 40 km/h and below, over 40 km/h and not more than 60 km/h, and over 60 km/h.
Incidence in all road configurations (combined road configuration total in Table 7) was less than 1% for cars moving at 40 km/h and below, while the rate increased to about 2% for 40-60 km/h, and to around 6% for over 60 km/h, indicating that the percentage of misjudgment accidents in all accidents is nearly 8 times greater for cars moving at over 60 km/h compared to 40 km/h and below. Road configuration analysis also illustrates that the percentage becomes higher in all road configurations as the vehicle speed increases. In other words, the faster the car is moving, the greater the likelihood of misjudgment accidents. Left curve downhill, which showed the highest incidence in the preceding analysis, also proved to be the most precarious road configuration for cars traveling at speeds up to 60 km/h: the percentage was nearly 11% for speeds of up to 40 km/h and about 14% for 40-60 km/h.
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