Table 3.

Accident prevention techniques.

Technique	Study
Landing gear, subfloor, shockproof, airbags and seat	[51]
Active crash protection system	[51]
Deployable energy absorber	[51]
Resilience	[40,46,48,52,58]
Markov decision process	[53]
Monte Carlo tree search	[53]
3D obfuscation	[49]
Optimization	[54,55,56,57]
Multi-agent system	[16]
Machine learning	[9,12,34,54,55,59,60]