Lateral Jerk (LatJ) =================== Description ----------- Please refer to the :doc:`longitudinal jerk`. Properties ---------- Run-time capability ~~~~~~~~~~~~~~~~~~~ Yes Target values ~~~~~~~~~~~~~ 0.1 g/s (curve safety) [Ambros2019]_, 0.5 g/s [UNECE79]_, other upper bounds exist [ISO11270]_ [ISO22179]_ Subject type ~~~~~~~~~~~~ Road vehicles (automated and human) Scenario type ~~~~~~~~~~~~~ Any involving a rapid steering maneuver, e.g. curve driving, evasion maneuver Inputs ~~~~~~ Jerk :math:`j_i` at time t Output scale ~~~~~~~~~~~~ :math:`(-\infty,\infty)`, jerk (g/s or m/s³), ratio scale Reliability ~~~~~~~~~~~ High, as jerk outcome is often in accordance with a change in criticality [Bagdadi2013]_ Validity ~~~~~~~~ Low for run-time applications, as jerk makes criticality only measurable on reaction, but high for a-posteriori analysis under the assumption of drivers being reacting to critical events [Bagdadi2013]_ Sensitivity ~~~~~~~~~~~ High, since critical situations either require the driver to react abruptly, or the jerk will be high during the collision itself Specificity ~~~~~~~~~~~ Low, as critical situations can happen without lateral acceleration of the actors Prediction model ~~~~~~~~~~~~~~~~ None, since instantaneous