[EVO X]

lIf they have RADAR and/or LIDAR, then a failure to detect an incoming signal should have caused the thing to come to a stop as a fail safe.

The human body is going to absorb those types of signals. The bike may have returned some signals, but maybe not enough to identify what was going on. I am guessing there was some sort of Infrared sensor on board the vehicle, but if the temperature of the roadbed was at 98.6 it wouldn't detect the human either..

[GingisK]

The human body is going to absorb those types of signals.

Kindly explain, then, how the military's anti-personnel radar works. I can assure you that it does all the way back into the 1960s.

[DiogenesLamp]

" Our measurements establish the mm-wave system's ability to range humans up to 213 meters and distinguish between different human movements at 90 meters.

https://www.researchgate.net/publication/269325196_Human_Detection_and_Ranging_at_Long_Range_and_Through_Light_Foliage_Using_a_W-Band_Noise_Radar_With_an_Embedded_Tone