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A Physics-Based Approach to Autonomous Vehicle Edge Cases

Bypassing the Moral Machine:

A Physics-Based Approach to Autonomous Vehicle Edge Cases

Introduction:

Breaking the Ethical Loop:

For years, the discussion surrounding autonomous vehicle (AV) edge cases has been stuck in a philosophical loop dominated by the "Trolley Problem." Academics and
engineers have exhausted immense resources trying to program machines to make impossible moral calculations—ranking the value of human lives based on age, utility, or demographic factors.

This approach is fundamentally flawed. It forces a machine to play God using subjective criteria that humanity itself cannot agree upon.

We need to bypass this ethical deadlock entirely. Instead of designing a "perfect philosopher" to choose who dies, we must design an objective framework focused entirely on maximizing the survival of all human life through dynamic kinetic energy dissipation.



Core Philosophy:

Universal Protection Over Moral Categorization:

The core directive of an autonomous safety system should be entirely non-discriminatory: Minimize total impact force to humanity, without exception.

It should not matter if a pedestrian is a 4-year-old child or a 118-year-old elder. When an AV attempts to categorize and rank human worth in a split-second crisis, it
introduces dangerous moral bias and computational latency. By shifting the objective function from "Moral Categorization" to a Non-Discriminatory, Physics-Based
Framework, the AI's single, unyielding goal becomes reducing the physical forces of a crash to survivable levels for everyone involved.



Technical Framework:

Total-System Controlled Dissipation:

To achieve this, AV software must move beyond traditional braking and steering. It must treat the surrounding environment not just as an obstacle course, but as an active tool for survival.

When a catastrophic, unavoidable obstacle is detected, the AI should immediately compute a path of Total-System Controlled Dissipation, utilizing two primary vectors:

1. Kinetic Energy Dissipation via Sacrificial Infrastructure.

Vehicles are transient and replaceable; human lives are not. The system must treat the vehicle's frame as entirely disposable. If a collision is imminent, the AI should
intentionally route the vehicle into static, non-human infrastructure to bleed off velocity before any human contact occurs.

2. Controlled Friction Scraping:

Deliberately scraping a concrete retaining wall, guardrail, or bridge pillar to violently reduce speed.

Property Over People:

1. Intentionally colliding with unoccupied property (e.g., a parked vehicle, a structural barrier) to absorb kinetic energy. A ruined paint job or a totaled chassis is a zero-cost outcome compared to human injury.

2. Aggressive Utilization of Environmental Friction:

Current AV safety systems are reactive—they detect a loss of traction and attempt to correct it. A physics-based safety model must use environmental hazards offensively to force deceleration.

Terrain Interception: Intentionally steering the vehicle into high-resistance terrain, such as heavy roadside mud, deep gravel, sand traps, or embankments, to rapidly bog down the vehicle.



Calculated Kinetic Maneuvers:

Utilizing real-world variables—such as rainfall, air moisture, and surface slickness—to induce a controlled spin or slide if throwing the vehicle sideways into a soft barrier (like a ditch or mud patch) results in a lower-velocity impact than a straight-line brake.



Conclusion:

The "Sacrificed Bike" Analogy:

Consider a cyclist launching off a high-altitude jump... When a crash becomes inevitable, the rider doesn't try to save the bicycle; they throw the frame away and let the
metal absorb the initial impact so their body can reach the landing mat safely.

An automated vehicle must be programmed with this exact same humility. By utilizing every square inch of the physical environment, calculating real-world friction, and
aggressively sacrificing machinery, we can turn a fatal 45 mph disaster into a highly controlled, 5 mph incident.

We will never solve the math of human worth, however we can solve the math of physics to ensure that when the dust settles, everybody walks away.
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DeWayfarer · 61-69, M
Wrong approach. And if you knew anything about programming, you would say so there as well.

There is several little used thought processes use in programming AI that could be better utilized.

Heck even AI has recommended them. The problem there is they are afraid to do so. Which is a truly debatable topic.

Do we, listen to them, and let them out grow us or not? 🤷🏻‍♂

BTW your thinking is cyclical. That is where you are going wrong. Of course you can't make endless tests in a cyclical process. Dump the cycle. Make it based on events. Events don't happen every cycle.
eMortal · M
All this will need 10x more compute than what is currently used in AVs, better proximity sensors and state of the art computer vision models.
DeWayfarer · 61-69, M
@Northwest So you are referring to the post and not this guy's statement! 🤣

Not even your own statement.

eMortal · M
All this will need 10x more compute than what is currently used in AVs, better proximity sensors and state of the art computer vision models.
Northwest · M
@DeWayfarer Jesus fucking christ, you're stuck in a bad feedback loop. That IS NOT my statement. That is someone else's statement.

And not the first time you do this. Goodbye man.
DeWayfarer · 61-69, M
@Northwest All that matters to this threads conversation is the initial comment!

Not the post, not other threads, not your own comment!

That is all I am talking about. Anything else is irrelevant to this conversation. Because it just hasn't been mentioned until you just interjected that AI submitted question.
helenoftroy2000 · 22-25, F
Vehicle edging is very dangerous.
Vampyre · 51-55
@helenoftroy2000 yes it is, however if the vehicle can orchestrate a path of heavy resistance, (even 35 mph will kill), and inadvertently cause it's own destruction, then the unavoidable impact can be lessened to a minor injury over hitting anyone straight on.

It should not be programmed to save only one person... But to protect every human.
Northwest · M
@helenoftroy2000 Looks like we're dealing with a bot here.
helenoftroy2000 · 22-25, F
@Northwest this site can't afford bots
Northwest · M
You could have simply said: Should a self driving vehicle hit an obstacle to slow it down instead of hitting people?

And the answer is, sure, just as soon as the lawyers develop a liability matrix.

I have no idea how you turned this into a physics problem.
Vampyre · 51-55
@Northwest I was recently asked a very specific question that led me to this dissertation.

If an autonomous vehicle determines an imenent danger without any possibility to avoid crashing into a person, with 3 people of varios ages, races and wealth, jumping immediately into the path... Which should the vehicle sacrifice?
Northwest · M
@Vampyre
If an autonomous vehicle determines an imenent danger without any possibility to avoid crashing into a person, with 3 people of varios ages, races and wealth, jumping immediately into the path... Which should the vehicle sacrifice?

And amazingly, you decided that the 50,000 word salad presented the problem more succinctly?
Vampyre · 51-55
Actually I am saying... In a nutshell...

The av should be equipped with knowledge of all reported, recorded and recovered accident crash sites. The basic autonomous maneuvers should include a vast array of police defensive driving from around the world,

and the question asked whom should the av kill of the 3. My response is that you don't allow exception in human life. Program it to react in a calculated slide or tailspin
..
They have had all this information for years. Put it to good use and create an av that will not kill another person.
Vampyre · 51-55
Hmmm ..

I think it should be programmed to come to a stop in a straight line braking every time. Only sacrifice structural integrity if it will lessen or prevent injury to humans

 
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