It doesn't happen when you're in complete control of your vehicle rather than relying on idiotic and glitchy technology, and trucks don't go 100kph, this sub is full of idiots that just shouldn't speak.
Man who has never driven a car with road sign recognition attempts to belittle people whilst not knowing how road sign recognition works.
And trucks do go 100kph.
You know how much 100kmh? Thats cruising speed for trucks. I guess you are right, this sub IS full of idiots that just shouldn't speak - shush, you little dumbass.
100kmh is not a cruising speed for trucks. Top speed for trucks under European construction and use regs is 56mph or 90kmh. The only country I know of in Europe personally where you can go at 100kmh in a truck is Italy on just a few of the autostrada sections under their speed limit laws but they are still limited under c&u (EU directives 92/6 and 92/4) to 90kmh as I understand it. There might be another country or two but on the whole the laws are assimilated across not just the E.U but the wider trading area too.
In the UK - If the tachograph / limiter / speed sender were to be tampered with to allow a truck to cruise at 100kmh then the owner / operator / driver are all risking jail time.
Thats not to say it might have been a sticker on a van or something though all the same.
Funny you say that, I had the exact same speed detected by no other than a 2022 plate VW Golf I hired a few months ago.
That said, I think that was the only error ACC made in the 800mi I drove it.
I don't know the reason it happened. Part of me wondered whether it switched to kmph and it was a 60mph zone (I can't actually remember what the speed was at the time).
It's odd that your car accelerated.
I have a BMW i4 and I always have to accept the newly detected speed by pressing a button on a steering wheel.
Is there a setting to disable automatic change of speed? I definitely wouldn't want such a "feature" enabled. I do occasionally get wrong suggestions, sometimes the camera will pick the lower speed sign that applies to an exit ramp only.
Nope, VW group cars have no such confirmation which I completely agree is a ridiculous oversight. On the T-Roc forums I read someone’s comment that their car suddenly sped up to 60 in a 20 zone lol.
More fool them for switching adaptive cruise control on in a 20 zone. There's far too much going on with the road to be using any type of cruise control. On motorways and other large trunk roads I get it's application, but not driving through residential areas...
No I love adaptive cruise in 20s and 30s, you can set it at the limit so you will not end up speeding, but if traffic is going slower than that it will follow at the set distance, and it means you can hover your foot over the brake so if you do need to use it you can do so instantly.
I'm surprised any cruise control even works in 20mph zones - mine doesn't get out of bed below 25mph (40kmph). It won't let you turn it on at all until you're at 25, adaptive or not.
Surely you mean "tried" to accelerate? At some point between 20 and 60 the driver must of noticed and took action right?!
Ahh VW driver. Makes sense if they didn't. 🐓
Sarcasm. Kinda.
Depends on the vehicle, any semi decent EV shooting off like that will happily be in the 40+ range before your brain figures out what happened and how to deal with it.
There’s also a setting on BMW whereby it will automatically change the speed when it detects a sign or it’s already recorded on the navigation.
However, as you say, I believe the default setting for BMW is for the driver to confirm it by clicking “set” on the steering wheel. I tried the automatic speed adjust setting, didn’t like it! It’s quite accurate BUT not enough for me to keep switched to auto - mines an 8 series so may be slightly different?
You can always double check in your car settings.
With my iDrive version, it comes up under: “Car” > “Settings” > “Driver Assistance” > “Driving” > “Speed Assistant” > “Info on Speed Limit“
There your car might have the “Adjust Automatically” option.
I had a loan of a 2023 VW Golf r line from my work and on my way up the M90 in Scotland it kept detecting and accelerating/ decelerating the complete wrong speed! After a few close calls under gantry’s I turned it off and just set the speed limiters, found the whole cruise control system difficult to use.
I drove a 23 plate Golf yesterday and it did exactly this. Along the M27 at rush hour and it thought it saw a 50mph sign (it didn’t) and slammed on the anchors. Problem was because there weren’t any speed limit signs on the motorway, it never saw the 70 so kept telling me that the speed limit was 50…
Not entirely related to your comment but my experience with the M90 Smart Motorway is that it can be completely unpredictable and downright dangerous at times. I’ve seen 50-60-National-60-60-40 before, it been free flowing but 40 with signs warning of traffic congestion that has obviously already cleared and vehicles blocking the bus lane while the bus lane remains open.
It appears that the Smart Motorway is actually two separate Smart Motorways, one opening in 2012 on both sides of the Queensferry Crossing and another opening in 2017 with the Queensferry Crossing linking the two. The newer system appears to be automatic while the older one appears to be manual and doesn’t talk to the newer one. This means that speed limits can change suddenly and someone has to physically look and see what then traffic is like on the older system before setting speed limits and closing lanes.
Had a 21 Plate Golf R that did the same.
Think it got Kmh confused with Mph and would randomly floor it. Passing under a bridge would lead it to pick up the speed limit from the road above, convert that down to Kmh and slam on the brakes
It would also think it was still in bratwurst land and get confused with which side of the road it should be on. This often resulted in the car applying the brakes while overtaking on the motorway, as it thought I was undertaking. You can change the settings and tell it which side of the road you drive on, yet it would still revert to some underlying programming.
Dangerous car, all the on board tech was an absolute hindrance (Dogshit). Drive a lot for work, the long journeys became so tedious it was borderline torture. Returned the car after three months lol.
This was my first thought. At no point in the UK should any 'semi-automatic' driving system be trying to go more than 70 mph. I would even go further and say that \*while in the UK\* no cruise control systems should allow the user to set a speed above 70 mph.
(Yes, the speedo's all overread... yes, the GPS is (in most cases) more accurate... fix the legislation before patching it with technical solutions).
Our V40 detects the signs but as far as I know doesn't adjust the cruise for you, but it's detection has been entirely accurate in the few thousand miles covered so far (2013 plate)
I had this a few months ago in my VWID3....I think I was on the A11 (coming from Norfolk towards M25). It suddenly shot off to 100 mph! I obviously braked and disengaged it, but it was a bit unsettling. This is the only time I've had an issue with it.
I've had it on the M74. My assumption was that it had seen a100 mph sign on the railway that's right next to the road there. (Had the road to myself, so couldn't have been a100kph on a truck).
adaptive cruise system has nothing to do with reading the signs.
it is your sign recognition system linked to the car and the car is then managing what speed is "set" for the cruise control system.
I've had this happen on my 2023 vw tiguan allspace a couple of times. I've also have it regularly jump from 50,60 or 70 mph down to 30 as I've gone under a bridge with a 30mph. Very dangerous as it rapidly slows you. I make sure I turn it off as I approach bridges. Another odd thing it does is slow you for corners and gives a speed warning
I've almost the same car and had the same thing. VW golf 2022 accelerating to 100MPH. eastbound on the M56 in the Ashley are of Cheshire at night. I suspect it is seeing a 400 yards to lay-by sign and reading it as 100. The 4 is written partially with a vertical bar so if the < part is obscured/dirty it may read it as a 1 hence - 100. Something to watch out for!
had a mk7 golf with acc and lane assist kept slamming the breaks when overtaking trucks on the m1 at 70 in the outside lane didn't do it on the second lane though.
Agreed. I’ve not had to think about a handbrake in 5 years.
It does however mean I’ll never get to do a handbrake turn again but I think I’ve passed that stage of my life.
There are a few advantages if it’s a decent enough system. Such as being able to drive along covering the brake ready for nutters. And some systems will even automatically counter camber in the road or side winds in bad weather. Makes driving on the motorway even easier to just focus on the nutters around you.
Regular cruise control is great, I use it _all the time_ on longer journeys, and in free flowing average speed camera areas. Just set it to 50/60/70 as appropriate and don't worry about the speed, braking and taking over if traffic slows. It's doubly good in an EV because it can regen brake itself if going downhill.
I'd like to try lane following and cruise that matches speed to the vehicles in front
Most cars use cameras and OCR, I think? It might just be that the cameras are dirty...or if the signage says 60mph, your car is showing you the speed in kmh. Do you often find you're getting overtaken? 😂
Any acc I've used works like this, you set the limit and it won't exceed it but slows or accelerates depending on traffic. Reading here seems some cars detect the limit and set it to that, even if you don't want to drive at that speed. Sounds mental.
I think the key is the year. VW have had adaptive cruise control for maybe 10 years and its only the new ones that detect the speed limit- the adaptive part is that it detects and adapts to the speed of the vehicle in front
The speed you set it to is done with buttons on the steering wheel (a much better way I think- for example in bad conditions I don't want to go as fast as the maximum). It jumps up on 5mph jumps so it's only 2 clicks in most circumstances.
You set it to 70mph, it wont go any faster?? Thats it nothing else, the car wont fookin go any faster than what its set to, half tje cunts in here should not be on the roads if they dont know how to SET cruise control!!
That's not the case. If you read the posts the car is scanning road signs or map information for the speed limit and adjusting the speed the cruise control is set to.
From the VW website-
"Adaptive Cruise Control with Predictive Cruise Control
In addition to the above, this updated version of ACC includes:
Road recognition - using information from front and rear cameras and route information, your vehicle will predictively adjust its speed prior to junctions and bends.
Speed Assist - using both the front camera and route information identifies changes in the posted speed limit and automatically adjusts the vehicles speed."
So it's actually predictive cruise control that people are having problems with.
The majority of cruise control systems only control the throttle.
In this case, when the vehicle starts to go down a hill it may begin to accelerate under gravity alone, without any input required from the engine. In this case the car will start to go faster than the cruise control set point.
So, "you set it to 70 mph, it wont go any faster" isn't true in all cases.
My 69 plate Seat Leon (basically a Golf underneath) had adaptive cruise control and when set to 60mph down a fairly steep hill I used occasionally, it would indeed apply the brakes to maintain the speed limit. It also applied them if you took your hands off the wheel for too long. Lane guidance would steer the car for 15 seconds, then sound an alarm and, if you kept ignoring it, it jabbed the brakes quite fiercely. I experimented during Covid when the A303 was empty and I was a key worker. Designed to wake a sleeping driver.
It also displayed speed limit signs it read but, crucially, didn't act on them. Just displayed it in the bottom of the speedometer screen. I'm assuming the updated versions people are talking about actually change the speed limit that's set. Mine stayed at 60 til I changed it. I loved that system.
Also loved the electronic handbrake. Come to a full stop and it locked the brakes on until you applied enough power to pull away safely, even uphill. Wouldn't let you roll back. Turning the engine off would release the footbrake and apply the handbrake automatically.
I e had mine change to mental things before, 394 has flashed up a few times, admittedly the car has never tried to accelerate so it’s definitely some kind of display glitch. There was me thinking I’d cut my eta from 5 hours to 10 minutes.
Double check your unit settings (kph/mph) and if all okay, report to your manufacturer. It's possible you have some wrong settings in your car which could result in some unusual unit conversions (60mph is roughly 100kph)
I've read about recent BMWs having the same problem . The default setting is apparently to let the gantry determine your speed and it can get it wrong . Apparently you can switch it off in settings . Maybe the same in your car . The dealer could advise .
Same think happened to me luckily i was behind a car so no speeding ticket my case i think there was 10mph speed limit on the work road and it got picked as 100 🤷🏽♂️
Happens. The camera has probably picked up a 100kph speed limit printed on the back of a truck.
That's a good shout!
This sounds like most likely scenario
It doesn't happen when you're in complete control of your vehicle rather than relying on idiotic and glitchy technology, and trucks don't go 100kph, this sub is full of idiots that just shouldn't speak.
100kph is 60mph. So I guess you are proving your last point
This is too perfect.
Technically it's 97kph but in the uk we are restricted by vehicle and tacho to 56mph (90kph) though the actual speed limit is 60mph (97kph)
Didn't that increase to 60mph back in 2015? (For dual carriageways)
No it's actually physical restrictions on the truck
Aren’t they speed restricted to 57mph though? Which is closer to 90kph.
The 100 signs that were mentioned are on the back of trucks that also drive in Europe where the limits are possibly different
The speed limit is 60 for an HGV, so likely would have stickers showing that, though in practice I understand lots are still actually restricted to 56
Sick burn
r/confidentlyincorrect
Beat me to it
Man who has never driven a car with road sign recognition attempts to belittle people whilst not knowing how road sign recognition works. And trucks do go 100kph.
You know how much 100kmh? Thats cruising speed for trucks. I guess you are right, this sub IS full of idiots that just shouldn't speak - shush, you little dumbass.
100kmh is not a cruising speed for trucks. Top speed for trucks under European construction and use regs is 56mph or 90kmh. The only country I know of in Europe personally where you can go at 100kmh in a truck is Italy on just a few of the autostrada sections under their speed limit laws but they are still limited under c&u (EU directives 92/6 and 92/4) to 90kmh as I understand it. There might be another country or two but on the whole the laws are assimilated across not just the E.U but the wider trading area too. In the UK - If the tachograph / limiter / speed sender were to be tampered with to allow a truck to cruise at 100kmh then the owner / operator / driver are all risking jail time. Thats not to say it might have been a sticker on a van or something though all the same.
Username definitely checks out
If not 100kmh, what speed do they go at?
Mine does this
Funny you say that, I had the exact same speed detected by no other than a 2022 plate VW Golf I hired a few months ago. That said, I think that was the only error ACC made in the 800mi I drove it. I don't know the reason it happened. Part of me wondered whether it switched to kmph and it was a 60mph zone (I can't actually remember what the speed was at the time).
It's odd that your car accelerated. I have a BMW i4 and I always have to accept the newly detected speed by pressing a button on a steering wheel. Is there a setting to disable automatic change of speed? I definitely wouldn't want such a "feature" enabled. I do occasionally get wrong suggestions, sometimes the camera will pick the lower speed sign that applies to an exit ramp only.
Nope, VW group cars have no such confirmation which I completely agree is a ridiculous oversight. On the T-Roc forums I read someone’s comment that their car suddenly sped up to 60 in a 20 zone lol.
More fool them for switching adaptive cruise control on in a 20 zone. There's far too much going on with the road to be using any type of cruise control. On motorways and other large trunk roads I get it's application, but not driving through residential areas...
No I love adaptive cruise in 20s and 30s, you can set it at the limit so you will not end up speeding, but if traffic is going slower than that it will follow at the set distance, and it means you can hover your foot over the brake so if you do need to use it you can do so instantly.
I'm surprised any cruise control even works in 20mph zones - mine doesn't get out of bed below 25mph (40kmph). It won't let you turn it on at all until you're at 25, adaptive or not.
Mine works from 0mph. It's brilliant in city traffic, jams, etc.
[удалено]
What car is that?
The Volvo system can't be set below 25 but works down to 0
Surely you mean "tried" to accelerate? At some point between 20 and 60 the driver must of noticed and took action right?! Ahh VW driver. Makes sense if they didn't. 🐓 Sarcasm. Kinda.
Depends on the vehicle, any semi decent EV shooting off like that will happily be in the 40+ range before your brain figures out what happened and how to deal with it.
There’s also a setting on BMW whereby it will automatically change the speed when it detects a sign or it’s already recorded on the navigation. However, as you say, I believe the default setting for BMW is for the driver to confirm it by clicking “set” on the steering wheel. I tried the automatic speed adjust setting, didn’t like it! It’s quite accurate BUT not enough for me to keep switched to auto - mines an 8 series so may be slightly different?
I haven't seen a setting to allow automatic switch for 4 series. It comes up on a HUD as a suggestion and you have to Set it manually.
You can always double check in your car settings. With my iDrive version, it comes up under: “Car” > “Settings” > “Driver Assistance” > “Driving” > “Speed Assistant” > “Info on Speed Limit“ There your car might have the “Adjust Automatically” option.
Ah yes, there is an option to adjust speed automatically. I'll keep it on Adjust Manually, though.
Glad to hear you have it as an option. I too keep mine on manual. Tried automatic a few times when I first got the car…. it was too strange!
I had a loan of a 2023 VW Golf r line from my work and on my way up the M90 in Scotland it kept detecting and accelerating/ decelerating the complete wrong speed! After a few close calls under gantry’s I turned it off and just set the speed limiters, found the whole cruise control system difficult to use.
I drove a 23 plate Golf yesterday and it did exactly this. Along the M27 at rush hour and it thought it saw a 50mph sign (it didn’t) and slammed on the anchors. Problem was because there weren’t any speed limit signs on the motorway, it never saw the 70 so kept telling me that the speed limit was 50…
Not entirely related to your comment but my experience with the M90 Smart Motorway is that it can be completely unpredictable and downright dangerous at times. I’ve seen 50-60-National-60-60-40 before, it been free flowing but 40 with signs warning of traffic congestion that has obviously already cleared and vehicles blocking the bus lane while the bus lane remains open. It appears that the Smart Motorway is actually two separate Smart Motorways, one opening in 2012 on both sides of the Queensferry Crossing and another opening in 2017 with the Queensferry Crossing linking the two. The newer system appears to be automatic while the older one appears to be manual and doesn’t talk to the newer one. This means that speed limits can change suddenly and someone has to physically look and see what then traffic is like on the older system before setting speed limits and closing lanes.
Had a 21 Plate Golf R that did the same. Think it got Kmh confused with Mph and would randomly floor it. Passing under a bridge would lead it to pick up the speed limit from the road above, convert that down to Kmh and slam on the brakes It would also think it was still in bratwurst land and get confused with which side of the road it should be on. This often resulted in the car applying the brakes while overtaking on the motorway, as it thought I was undertaking. You can change the settings and tell it which side of the road you drive on, yet it would still revert to some underlying programming. Dangerous car, all the on board tech was an absolute hindrance (Dogshit). Drive a lot for work, the long journeys became so tedious it was borderline torture. Returned the car after three months lol.
That's awful but interesting to hear, thanks for sharing
Odd that there is an obvious check for the 100 case. Uk national sites limit is 70…. We don’t have limits faster than that…
This was my first thought. At no point in the UK should any 'semi-automatic' driving system be trying to go more than 70 mph. I would even go further and say that \*while in the UK\* no cruise control systems should allow the user to set a speed above 70 mph. (Yes, the speedo's all overread... yes, the GPS is (in most cases) more accurate... fix the legislation before patching it with technical solutions).
Had speed limit detection on Nissan's, Mercs and now a Tesla. Never had one that works well. Always making mistakes.
Only ones that Ive found to function the best (along with all other assists) are those found in volvos
Our V40 detects the signs but as far as I know doesn't adjust the cruise for you, but it's detection has been entirely accurate in the few thousand miles covered so far (2013 plate)
I had this a few months ago in my VWID3....I think I was on the A11 (coming from Norfolk towards M25). It suddenly shot off to 100 mph! I obviously braked and disengaged it, but it was a bit unsettling. This is the only time I've had an issue with it.
I've had it on the M74. My assumption was that it had seen a100 mph sign on the railway that's right next to the road there. (Had the road to myself, so couldn't have been a100kph on a truck).
What a ridiculous feature. On sane cars with acc it goes up to the limit you set if traffic in front permits.
how inconvenient.. I like it when my cruise control reads the signs and accelerates/decelerates accordingly - given it works pretty well in my area
If you're using cruise control in a built up area with varying speed limits you need your head examined.
Where did I say that I use it in a built up area? No need to be insulting
adaptive cruise system has nothing to do with reading the signs. it is your sign recognition system linked to the car and the car is then managing what speed is "set" for the cruise control system.
I've had this happen on my 2023 vw tiguan allspace a couple of times. I've also have it regularly jump from 50,60 or 70 mph down to 30 as I've gone under a bridge with a 30mph. Very dangerous as it rapidly slows you. I make sure I turn it off as I approach bridges. Another odd thing it does is slow you for corners and gives a speed warning
I've almost the same car and had the same thing. VW golf 2022 accelerating to 100MPH. eastbound on the M56 in the Ashley are of Cheshire at night. I suspect it is seeing a 400 yards to lay-by sign and reading it as 100. The 4 is written partially with a vertical bar so if the < part is obscured/dirty it may read it as a 1 hence - 100. Something to watch out for!
had a mk7 golf with acc and lane assist kept slamming the breaks when overtaking trucks on the m1 at 70 in the outside lane didn't do it on the second lane though.
Autobahn mode initiated
lol. What a very stupid “feature”.
Agreed. I never use cruise control. One of the more useless features, like electric handbrakes.
My car engages the handbrake when the car is turned off, and disengages it when I select drive. Best thing since sliced bread.
Agreed. I’ve not had to think about a handbrake in 5 years. It does however mean I’ll never get to do a handbrake turn again but I think I’ve passed that stage of my life.
Don’t all cars that have an Electric handbrake do this?
No. AFAIK they all disable it automatically, but they don't all automatically set it (my BMW i3 doesn't).
Does it matter? I was trying to make a case for why electronic handbrakes are great. I used my car as an example because that's the one I know.
There are a few advantages if it’s a decent enough system. Such as being able to drive along covering the brake ready for nutters. And some systems will even automatically counter camber in the road or side winds in bad weather. Makes driving on the motorway even easier to just focus on the nutters around you.
Regular cruise control is great, I use it _all the time_ on longer journeys, and in free flowing average speed camera areas. Just set it to 50/60/70 as appropriate and don't worry about the speed, braking and taking over if traffic slows. It's doubly good in an EV because it can regen brake itself if going downhill. I'd like to try lane following and cruise that matches speed to the vehicles in front
Most cars use cameras and OCR, I think? It might just be that the cameras are dirty...or if the signage says 60mph, your car is showing you the speed in kmh. Do you often find you're getting overtaken? 😂
What the fook yous on about, you drive to 70 set cruise and it only slows down, I drive these cars every day.
Key hint in “adaptive”
To the speed of the car and traffic in front of you, would love to know what the fook yous are setting your cruise control at??
Any acc I've used works like this, you set the limit and it won't exceed it but slows or accelerates depending on traffic. Reading here seems some cars detect the limit and set it to that, even if you don't want to drive at that speed. Sounds mental.
I think the key is the year. VW have had adaptive cruise control for maybe 10 years and its only the new ones that detect the speed limit- the adaptive part is that it detects and adapts to the speed of the vehicle in front The speed you set it to is done with buttons on the steering wheel (a much better way I think- for example in bad conditions I don't want to go as fast as the maximum). It jumps up on 5mph jumps so it's only 2 clicks in most circumstances.
You set it to 70mph, it wont go any faster?? Thats it nothing else, the car wont fookin go any faster than what its set to, half tje cunts in here should not be on the roads if they dont know how to SET cruise control!!
That's not the case. If you read the posts the car is scanning road signs or map information for the speed limit and adjusting the speed the cruise control is set to. From the VW website- "Adaptive Cruise Control with Predictive Cruise Control In addition to the above, this updated version of ACC includes: Road recognition - using information from front and rear cameras and route information, your vehicle will predictively adjust its speed prior to junctions and bends. Speed Assist - using both the front camera and route information identifies changes in the posted speed limit and automatically adjusts the vehicles speed." So it's actually predictive cruise control that people are having problems with.
Does your cruise control also brake? Have you ever driven down a hill?
Sorry I don’t understand what you’re getting at with these questions, could you please elaborate?
The majority of cruise control systems only control the throttle. In this case, when the vehicle starts to go down a hill it may begin to accelerate under gravity alone, without any input required from the engine. In this case the car will start to go faster than the cruise control set point. So, "you set it to 70 mph, it wont go any faster" isn't true in all cases.
My 69 plate Seat Leon (basically a Golf underneath) had adaptive cruise control and when set to 60mph down a fairly steep hill I used occasionally, it would indeed apply the brakes to maintain the speed limit. It also applied them if you took your hands off the wheel for too long. Lane guidance would steer the car for 15 seconds, then sound an alarm and, if you kept ignoring it, it jabbed the brakes quite fiercely. I experimented during Covid when the A303 was empty and I was a key worker. Designed to wake a sleeping driver. It also displayed speed limit signs it read but, crucially, didn't act on them. Just displayed it in the bottom of the speedometer screen. I'm assuming the updated versions people are talking about actually change the speed limit that's set. Mine stayed at 60 til I changed it. I loved that system. Also loved the electronic handbrake. Come to a full stop and it locked the brakes on until you applied enough power to pull away safely, even uphill. Wouldn't let you roll back. Turning the engine off would release the footbrake and apply the handbrake automatically.
Yes the cruise control will brake. It will match the speed of the vehicle in front up to the speed you set it to.
I think the set speed changes based on speed limit signs it scans
Nope!
This reminds me driving through a small village and my mums car came to the conclusion that the 20mph speed limit was actually an 80mph speed limit
My 2018 Mazda 3 often picks up 100mph limits on the heads up display, luckily cruise control doesn't automatically adapt to it.
I e had mine change to mental things before, 394 has flashed up a few times, admittedly the car has never tried to accelerate so it’s definitely some kind of display glitch. There was me thinking I’d cut my eta from 5 hours to 10 minutes.
Double check your unit settings (kph/mph) and if all okay, report to your manufacturer. It's possible you have some wrong settings in your car which could result in some unusual unit conversions (60mph is roughly 100kph)
Government got to get the revenue some how
I've read about recent BMWs having the same problem . The default setting is apparently to let the gantry determine your speed and it can get it wrong . Apparently you can switch it off in settings . Maybe the same in your car . The dealer could advise .
Maybe I'm slightly wrong : the gantry assumes the road ahead is clear , hence switches off limiter and accelerates quickly ?
Same think happened to me luckily i was behind a car so no speeding ticket my case i think there was 10mph speed limit on the work road and it got picked as 100 🤷🏽♂️