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Camera read IL Rt 83 sign as 85 MPH sign!

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scottf200

Well-Known Member
Feb 3, 2013
6,215
7,439
Chicagoland
Was driving on IL Route 83 today and noticed my X was displaying an 85 mph sign on the drivers info display. Yikes.

Illinois Route 83 - Wikipedia, the free encyclopedia

This is what the sign look like along that route.
Image: http://i.imgur.com/MGKNLGz.png
MGKNLGz.png


My driver info display today:
Image: http://i.imgur.com/VuQTpQy.png
VuQTpQy.png
 
I think a better question is why does Illinois make their route signs look identical to a speed limit sign?

Indiana's are the same, too.

That said, the Model X will occasionally read this sign:

Screen-Shot-2013-07-30-at-7.25.49-AM-595x1024.png


...as a 50 mph sign. There's some tuning that MobilEye & Tesla need to do, I think.

-c
 
The other night it read a 45 mph sign as a 5 mph speed limit.

The "4" was a different material placed over the original number. I noticed at night it did not reflect the same as the 5. Suspect that was the reason why AP read it as 5 mph (not 45).

I'll try to get a pic next time that happens.
 
The very same thing happens with me in Noprth Florida while driving on Hwy 20. It's a repeatable experiment. Car immediately slows down from 55 to 20. Less frequently, the speed limit (35 mph) sign on another road is read as 5 MPH. I didn't think the cruise control could work below about 18 MPH, but twice, it has slowed toward 5 MPH before I was able to override the AutoPilot.
 
The very same thing happens with me in Noprth Florida while driving on Hwy 20. It's a repeatable experiment. Car immediately slows down from 55 to 20. Less frequently, the speed limit (35 mph) sign on another road is read as 5 MPH. I didn't think the cruise control could work below about 18 MPH, but twice, it has slowed toward 5 MPH before I was able to override the AutoPilot.

Same in Ohio on OH 25 and OH 65. I drive manually on Rte 281 and 582 ;)