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Table 4 Analysis of longitudinal accelerations

From: On the human control of vehicles: an experimental study of acceleration

Percentile Min. 5 % 25 % 50 %. 75 % 95 % Max.
Accel’n (m/s2)
 - High-curvature −8.87 −1.63 −0.35 0.06 0.65 1.38 4.43
 - Low curvature −4.90 −0.38 −0.05 0.09 0.24 0.56 2.42
- All data −8.87 −0.89 −0.12 0.09 0.30 0.96 4.43
 - 0–40 km/h −8.87 −1.79 −0.39 0.04 0.60 1.49 4.43
 - 40–70 km/h −4.77 −1.24 −0.26 0.11 0.47 1.13 3.25
 - Over 70 km/h −4.90 −0.38 −0.05 0.09 0.23 0.55 2.06
Braking (m/s2)
- All data −8.87 −1.61 −0.44 −0.26 −0.09 −0.01 0
 - Under 40 km/h −8.87 −2.22 −1.14 −0.47 −0.11 −0.02 0
 - 40–70 km/h −4.77 −1.72 −0.72 −0.32 −0.18 −0.03 0
 - Over 70 km/h −4.90 −0.54 −0.32 −0.16 −0.06 −0.01 0