Auto-braking systems and the Car Wash

[Dave-W]

http://www.forbes.com/sites/jimgorz...-being-confounded-by-car-washes/#39c20dca1450

According to the car-shopping site BestRide.com, fastidious motorists driving 14 different vehicle brands are finding that their rides can be rendered virtually immobilized at many automated car washes unless certain auto-braking systems can be disabled.

That’s because the sensors used for forward collision mitigation systems aren’t able to tell the difference between a solid wall and what the industry calls a “soft mitter curtain.” To an auto-braking system’s sensors, both are considered large and equally hazardous obstructions with which collisions must be avoided. Car wash operators are reporting instances where cars have become stuck in mid-wash by their vehicles’ auto-braking systems. Some, ironically in the act of preventing a crash, have actually jumped the car wash rails and inadvertently caused a collision with the vehicle directly rearward.

 

[morse86]

If you buy a vehicle, drive it. Otherwise take a taxi.

You cannot automate driving. GPS can be awful accuracy at times and is based off Loran.

 

[Dave-W]

GPS can be awful accuracy at times and is based off Loran.

Not really. GPS is an entirely different system than Loran. Loran was based on fixed location transmitters and was only accurate to within a few hundred feet. (Loran C - the last version)

GPS is based on multiple satellites and can be accurate to a few inches (D-GPS)

Here at NOAA's Marine Chart Division, we took the Loran curves off of our charts several years ago.

 

[TJM]

As more automated cars drive the roads the greater GPS and world mapping will get. If you take an automated car into a room full of water and humidity where signals can get refracted and thrown all around there is obviously some issues going to be there. A auto bath house is not a road way. These cars are reacting just as they are programmed to. That is to stop when there is a hazard in front or behind the car.

Self driving cars do not use GPS to drive. They use arrays of real time sensors that look around the car constantly to avert the vessel from collision. There can be multiple factors that occur at once in a car wreck that would be avoided if a humans brain could process and react quickly enough to all stimuli to make multiple adjustments to speed, brake, steering multiple times within 5 seconds. Nothing can process all that data more so than...a computer processor.

 

[Faithful Scuff]

Auto manufactures need to turn off crash avoidance when the car is in neutral and moving less than 3 miles an hour.