Where does it get speed limits?

[SANZC02]

• Pay attention to when you pass a speed limit sign that increases or decreases the speed limit and the length of time it takes for the dash to show the change. It can happen as you pass the sign or a quarter mile down the road, or not at all. If reading sign it would be pretty consistent.

My G1 R1S is very consistent about changing the speed limit right when I pass a standard white speed limit sign. Not construction or temporary though. It will revert to the map data speed limit down the road a ways without passing any other signs.

I’ve had the vehicle for almost 3.5 years and it has always behaved that way.

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[JacobAZ]

My G1 R1S is very consistent about changing the speed limit right when I pass a standard white speed limit sign. Not construction or temporary though. It will revert to the map data speed limit down the road a ways without passing any other signs.

I’ve had the vehicle for almost 3.5 years and it has always behaved that way.

Yes the map data is correct most of the time, so it will chang the displayed limit as you pass the sign ... but the data does exact location errors (a few hundred yards) at some locations. Here is another test, it takes a little more time. Find a speed limit sign which is changing the speed and the R1 display changes speed as you pass. Also this road has multiple lanes. Drive past the speed limit sign in the left lane with a semi or large box truck next to you on the right blocking view of the sign. The displayed speed limit in Rivian and Tesla will still change at the same point, even though the sign is not visible.

 

[SANZC02]

Yes the map data is correct most of the time, so it will chang the displayed limit as you pass the sign ... but the data does exact location errors (a few hundred yards) at some locations. Here is another test, it takes a little more time. Find a speed limit sign which is changing the speed and the R1 display changes speed as you pass. Also this road has multiple lanes. Drive past the speed limit sign in the left lane with a semi or large box truck next to you on the right blocking view of the sign. The displayed speed limit in Rivian and Tesla will still change at the same point, even though the sign is not visible.

I’ll let you go on thinking the vehicles do not read the signs, clearly you do not think they do.

Tesla and Rivian are not the only ones doing this, these days there are lots of models that blend map data and speed limit signs to determine the speed limit. A few others are Mercedes, BMW, Audi, there are others as well. Even Jeep grand Cherokees have this technology in them.

 

[JacobAZ]

I’ll let you go on thinking the vehicles do not read the signs, clearly you do not think they do.

Tesla and Rivian are not the only ones doing this, these days there are lots of models that blend map data and speed limit signs to determine the speed limit. A few others are Mercedes, BMW, Audi, there are others as well. Even Jeep grand Cherokees have this technology in them.

Don't get me wrong, I am not saying Rivian and Tesla (the only two I have have owned which display speed limit) can't detect speed signs. I am saying that real world facts show most of the time the map data is being reflected.

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