| Kinematic features | (i) Mean of object 1 velocity, max of object 1 velocity, min of object 1 velocity, and the standard deviation of object 1 velocity | (ii) Mean of object 2 velocity, max of object 2 velocity, min of object 2 velocity, and the standard deviation of object 2 velocity | (iii) Mean of object 1 acceleration, max of object 1 acceleration, min of object 1 acceleration, and the standard deviation of object 1 acceleration | (iv) Mean of object 2 acceleration, max of object 2 acceleration, min of object 2 acceleration, and the standard deviation of object 2 acceleration | (v) Mean of relative distance, max of relative distance, min of relative distance, and the standard deviation of relative distance | (vi) Mean of relative velocity, max of relative velocity, min of relative velocity, and the standard deviation of relative velocity |
| SSM-related features | T2, RTTC, TTXavg, object 1 distance to conflict point, object 2 distance to conflict point, and direction of conflict |
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