RT Journal Article
A1 Johan Engström
A1 Gustav Markkula
A1 Qingwan Xue
A1 Natasha Merat

PB iet
T1 Simulating the effect of cognitive load on braking responses in lead vehicle braking scenarios
JN IET Intelligent Transport Systems
VO 12
IS 6
SP 427
OP 433
AB The recently proposed cognitive control hypothesis suggests that the performance of cognitively loading but non-visual tasks such as cell phone conversation selectively impairs driving tasks that rely on top-down cognitive control while leaving automatised driving tasks unaffected. This idea is strongly supported by the existing experimental literature and the authors have previously outlined a conceptual model to account for the key underlying mechanisms. The present paper presents a mechanistically explicit account of the cognitive control hypothesis in terms of a computational simulation model. More specifically, it is shown how this model offers a straightforward explanation for why the effect of cognitive load on brake response time reported in the experimental lead vehicle (LV) braking studies depends strongly on scenario kinematics, more specifically the initial time headway. It is demonstrated that this relatively simple model can be fitted to empirical data obtained from an existing meta-analysis on existing LV braking studies.
K1 cognitive load effect
K1 lead vehicle braking scenarios
K1 cognitive control hypothesis
K1 braking responses
K1 computational simulation model
K1 initial time headway
K1 cognitive loading performance
K1 brake response time
K1 conceptual model
K1 meta-analysis
K1 LV braking
K1 automatised driving tasks
K1 scenario kinematics
K1 cell phone conversation
DO https://doi.org/10.1049/iet-its.2017.0233
UL https://digital-library.theiet.org/;jsessionid=ul6b5f39rsmt.x-iet-live-01content/journals/10.1049/iet-its.2017.0233
LA English
SN 1751-956X
YR 2018
OL EN