Speed limit technology

[Deleted User]

We have similar on our car but its a guide, wouldn't mind betting the manual says so as well, it doesn't beat the Mk1 detection system and the code.

troffasky

motorguy said:

As others have put, the technology is a guide at best.

What is the point of this technology?

You can't rely on it because sign recognition isn't 100% and the limit data from the mapping may be out of date.

If you trust it and it's wrong, you get the points, not the car, so you should never trust it.

One more bit of information consuming the driver's attention. One more system in the car to go wrong.

I can't think of an upside to it.

lordmountararat

My satnav has parts of the A38 in Somerset as 50 mph when in fact it is 40 mph. Satnavs need up dating every year, but that can get a bit expensive.

Herzlos

troffasky said:

motorguy said:

As others have put, the technology is a guide at best.

What is the point of this technology?

You can't rely on it because sign recognition isn't 100% and the limit data from the mapping may be out of date.

If you trust it and it's wrong, you get the points, not the car, so you should never trust it.

One more bit of information consuming the driver's attention. One more system in the car to go wrong.

I can't think of an upside to it.

It'll alert you if it thinks you're going too fast. But it's never going to be perfect.

[Deleted User]

troffasky said:

motorguy said:

As others have put, the technology is a guide at best.

What is the point of this technology?

You can't rely on it because sign recognition isn't 100% and the limit data from the mapping may be out of date.

If you trust it and it's wrong, you get the points, not the car, so you should never trust it.

One more bit of information consuming the driver's attention. One more system in the car to go wrong.

I can't think of an upside to it.

Probably someone in an office somewhere said to the minions, come up with neat idea's we can chuck at this to make it look better on the sales floor. This stuff is going to march on regardless, even more so when drivelers cars appear legally. I like some of it, other bits are not quite gelled as useful.

Which makes me wonder, will cars be the ones shouting at each other if two auto drive cars have an accident? Sort of leave the humans in the back seat with the paper and a cuppa whilst they square up to each other?

facade

half_empty said:

Probably someone in an office somewhere said to the minions, come up with neat idea's we can chuck at this to make it look better on the sales floor.

Plus, it is essentially "free" as the supporting tech. is already fitted, bung the trainee a few hours work bashing out a few more lines of code, and they have an "extra feature" that lets them justify adding hundreds of pounds to the price of the car.

The pointless electronic box that replaces the reliable wire leading from the lightswitch to the headlights on my car can flash the lights on and off if it thinks it is a bit dark, or when I open the doors, part of the justification for the thousands more they charged for the "fully loaded" model versus "poverty spec."

If it was like the USA in the 60s, the only box I'd have ticked would have been "automatic", Id have been fine with "poverty spec." except for the gearbox.

born_again

troffasky said:

motorguy said:

As others have put, the technology is a guide at best.

What is the point of this technology?

You can't rely on it because sign recognition isn't 100% and the limit data from the mapping may be out of date.

If you trust it and it's wrong, you get the points, not the car, so you should never trust it.

One more bit of information consuming the driver's attention. One more system in the car to go wrong.

I can't think of an upside to it.

Yet you choose to rely on it.

We have speed limit recognition camera on our car. On holiday this year 60 limit road, passed a turn off & the 30 limit sign had been turned enough to be picked up.
Local road has a left hand bend with a side road on the right with a 20 limit... Guess what the camera picks up  🤣

There is the option to turn it off. 

Advocado

troffasky said:

motorguy said:

As others have put, the technology is a guide at best.

What is the point of this technology?

You can't rely on it because sign recognition isn't 100% and the limit data from the mapping may be out of date.

If you trust it and it's wrong, you get the points, not the car, so you should never trust it.

One more bit of information consuming the driver's attention. One more system in the car to go wrong.

I can't think of an upside to it.

Same as Tesla’s autopilot, in my opinion.  I don’t see the point of self-driving if I still have to hold the wheel and pay full attention.  I may as well do it myself and spend the thousands of pounds on something else.

Like the OP, all it takes is tech to be wrong once and trust in it is gone making it useless.

Until I can fall asleep in the back, I’m not interested in any sort of self-driving tech.  

Stubod

The last car we purchased has the option for speed sign monitoring which you can set to "beep" if you are going over (what it thinks), is the current speed limit. As a driver that always tries to keep within speed limits I find this feature really useful.

Although I like to think I maintain an awareness of the current limit my main concern is "missing" the occasional 30mph limit. Yes it occasionally picks up the wrong sign, and will report "count down" ,markers to speed limits as the current limit, but in general I prefer to have this option switched on.

BOWFER

My car also has speed limit recognition, it's ignored so i can't honestly say if it's accurate or not.
Our daughter was caught out by the system in her Polo, telling her she was in a 40mph limit when it was 30mph and she got flashed by a speed camera (but never got a NIP from it).
They're clearly iffy in a lot of cars and should never, ever, be relied upon.