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Article Dans Une Revue Traffic Injury Prevention Année : 2017

Emergency braking is affected by the use of cruise control

Résumé

Objective: We compared the differences in the braking response to vehicle collision between an active human emergency braking [control condition] and cruise control [CC] or adaptive cruise control [ACC].Methods: In 11male subjects, age 22 to 67 years, we measured the active emergency braking response during manual driving using the accelerator pedal [control condition] or in condition mimicking CC or ACC. In both conditions, we measured the brake reaction time [BRT], delay to produce the peak braking force [PBD],total emergency braking response [BRT + PBD], and peak braking force [PBF]. Electromyograms of leg and thigh muscles were recorded during braking. The tonic vibratory response [TVR], Hoffman reflex [HR], and M-waves were recorded in leg muscles to explore the change in sensorimotor control. Results: No difference in PBF, TVR amplitude, HR latency, and Hmax/Mmax ratio were found between the control and CC/ACC conditions. On the other hand, BRT and PBD were significantly lengthened in the CC/ACC condition [240 ± 13 ms and 704 ± 70 ms, respectively] compared to control [183 ± 7 ms and 568 ± 36 ms, respectively]. BRT increased with the age of participants and the driving experience shortened PBD and increased PBF. Conclusions: In male subjects, driving in a CC/ACC condition significantly delays the active emergency braking response to vehicle collision. This could result from higher amplitude of leg motion in the CC/ACC condition and/or by the age-related changes in motor control. Car and truck drivers must take account of the significant increase in the braking distance in a CC/ACC condition.
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Dates et versions

hal-01620414 , version 1 (20-10-2017)

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Yves Jammes, Michel Behr, Maxime Llari, Sarah Bonicel, Jean-Paul Weber, et al.. Emergency braking is affected by the use of cruise control. Traffic Injury Prevention, 2017, 18 (6), pp.636-641. ⟨10.1080/15389588.2016.1274978⟩. ⟨hal-01620414⟩
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