Fig. 8: Comparison of regenerative braking efficiency between ACC and human drivers across speed ranges, with statistical significance.
From: Insights into adaptive cruise control and energy efficiency in electric vehicles
This multi-panel figure presents the difference in regenerative braking efficiency between adaptive cruise control and human driving across three starting speed ranges: a city speeds (20-60 kph), b medium speeds (60–100 kph), and c highway speeds (100–140 kph). Each panel shows bar plots across bins of speed decrease (horizontal axis, in kph). The vertical axis represents the difference in regenerative braking efficiency (ACC minus human), in percentage points. Opaque bars represent bins where the difference is statistically significant after Bonferroni correction (adjusted p-value). Semi-transparent bars indicate regions where differences were not statistically significant. Missing bars reflect bins with insufficient data for comparison. Abbreviations: kph = kilometers per hour, p-value = probability value from hypothesis testing.
