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Self-Driving Cars And Pedestrians
20-05-2021, 05:50 AM (Tento příspěvek byl naposledy změněn: 20-05-2021 05:51 AM od miniming.)
Příspěvek: #1
Self-Driving Cars And Pedestrians
Self-Driving Cars And Pedestrians

[Obrázky: 051j6Cd95vl0njMXmpLR3h9-4..1569488189.jpg]

For Level 4 and Level 5 true self-driving vehicles, there won’t be a human driver involved in the driving task.

All occupants will be passengers.

The AI is doing the driving.

Detecting other cars that are nearby to a self-driving car is somewhat straightforward for the AI driving system. Usually, other cars are relatively sizable, and a self-driving car can make use of its on-board video cameras, radar, LIDAR, ultrasonic units, and other sensory devices to pretty much figure out that a car is in the driving scene of interest.

That being said, the speed of other cars can mean that where they are and where they are going will happen very fast (plus, weather conditions and other factors come to play too). The intention of the human driver of a car can be quite mysterious. We all know that human drivers can do some crazy stunts and opt to make wild turns or swerve erratically. Thus, not only is the detection of other cars crucial, so too is predicting what those cars are going to do next.

Pedestrians can be quite difficult to detect.

A pedestrian might be standing behind a large pole and be masked from view. Or a pedestrian might be standing still and momentarily sandwiched between two parked cars and be obscured by the size and shape of those cars. Keep in mind that children are pedestrians too, thus the profile of a pedestrian includes toddlers that are barely visible and can easily be behind other objects. Pedestrians crowded together are hard to differentiate in terms of how many pedestrians are present.

Confounding the detection is that even if a pedestrian is seemingly spotted, the question remains as to what the pedestrian plans to do.

Assume that a pedestrian is completely visible and easily seen at the corner of a street. The person is standing perfectly still.

Will the pedestrian wait to cross the street until traffic has subsided and allows safe passage?

Maybe yes, maybe no.

If it is raining, it seems that pedestrians tend to dart across the street, trying to avoid getting wet, and yet at the same moment imperiling their lives by perilously crossing the roadway. You’ve undoubtedly experienced pedestrians that seem to be playing a game of Frogger, whereby they try to make their way into the active roadway and weave around the moving cars.

Anyway, the pedestrian that is standing perfectly still can suddenly and without any particular warning decide to come into the street.

A car that is going 35 miles per hour will usually require a stopping distance of around 130 feet. This suggests that if the pedestrian standing still decides to suddenly come into the street, and suppose that the self-driving car is arriving at that point, the pedestrian is going to get hit if the distance is less than about 130 feet or so.

See, the self-driving car might detect that the pedestrian has gone into the street and the AI might immediately invoke the brakes, yet the distance involved is a matter of physics. There isn’t a magical way that the self-driving car is going to avoid hitting that pedestrian. I mention this important point because some are predicting that no pedestrian will ever get hit by a self-driving car. That is plain crazy talk.

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26-08-2021, 03:07 AM
Příspěvek: #2
RE: Self-Driving Cars And Pedestrians
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01-12-2021, 01:49 AM
Příspěvek: #3
RE: Self-Driving Cars And Pedestrians
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