All new cars now have to have speed limiters

[Conrad3]

This is because the MG4 system doesn't use GPS data to detect the type of road you are on at a bare minimum.
The UK is the only country I know of where the NSL varies based on road type, and it's utterly pathetic if you ask me.
It would cost very little to put 70 when it's a 70, 60 when it's a 60, and to put a decent amount of repeaters along a road especially immediately after junctions.
The speed recognition system would be more reliable, and people who don't use such would also not have to remember what a symbol means but simply be told

Sorry but it's pathetic that one still has to learn whether the speed limit is 60 or 70 by decoding the type of road. And let's see how many people get confused by whether a road is a dual carriageway or not ?

Sorry forgot to add mines a zsev lr trophy

 

[AlexC]

Yeah good idea.

 

[tsedge]

On whether we are creating a problem out of nothing... more and more people are complaining and getting a negative view of these systems when they come across a newer car that has them poorly implemented.

That's not a good thing, it is motivating them to turn everything off and make the kinds of negative statements that were quoted above about all such systems - regardless of whether they actually save lives, which some may.

That could build into a campaign that sees a future government outlaw them.

And it is doing nothing to drive the debate about poor driving standards, which is the underlying issue.

I'm wondering what else we might to do incentivise good driving... dramatically tilt the insurance costs or fine penalties for bad behaviours? Bonuses for clean licences? Restrict performance vehicles to those with an unblemished record?

 

[Narrowgauge725]

My ZS think that the national speed limit is 60 so flashes away when I am on the motorway or dual carriageway doing 70

 

[DixieTGS]

On whether we are creating a problem out of nothing... more and more people are complaining and getting a negative view of these systems when they come across a newer car that has them poorly implemented.

That's not a good thing, it is motivating them to turn everything off and make the kinds of negative statements that were quoted above about all such systems - regardless of whether they actually save lives, which some may.

Even the minor things on the MG implementation add to this effect. The latest 2 bugs which are beginning to grate are:

Enabling the limiter at 69 sets a limit of 70, but then causes the car to slow by a few mph before getting to 70 a few seconds later. Irritating to the driver behind as well as me.

While sitting on the limiter on the flat, every now and then it beeps and flashes for overspeed while still showing 70. It's just a distraction for no purpose.

For both of the above I can guess at the likely cause in the software, and both are unlikely to occur with any programmer with a few years of experience, which I think tells us something. ?

 

[AlexC]

More of an annoyance which software can fix is in ACC mode moving to overtake but it still brakes for car about to overtake. I will put together a whole list of items which should be fixed.

 

[mGizmo]

Hence my very first post in this thread: are we creating a problem out of nothing? Or are there specific examples we should be aware of?

Anything which can distract the driver should be regarded with skepticism at best.

For example, there's a junction coming out of Basildon joining the A127 where the slip road is short and the traffic typically heavy, where you need full concentration to slot into the stream in a fairly short space of time. I've experienced the AEB suddenly beeping loudly and completely unexpectedly because it didn't like how close I was to the car I was joining behind, which from its perspective appeared out of nowhere. It was almost the worst outcome - I knew it was a high risk situation, and the almost last thing I needed was a sudden loud warning sound!

(The actual last thing would've been had it decided to hit the brakes!)

That's why I now habitually turn off LKA (which also gets mightily confused by that particular piece of road) and reduce AEB to warning only at the lowest sensitivity.

 

[mGizmo]

Here's another example; one roundabout near me is on a section with a 40mph limit. It's a big roundabout, often busy, but the first exit has a 20 sign about 20 yards in. When I first got the MG4, I was trying the "intelligent" speed limiter, and got onto the roundabout, only to have it pick that sign up and suddenly slow me from about 35 to 20. It was a very distracting and confusing way to behave; at first I thought the car was broken! Especially awkward in an XPower since pushing the accelerator to the stop to effectively cancel the limiter results in a rather rapid speed increase!

After that I only use the manual limiter. I actually find the speed sign recognition handy as a cross check against my own observations, but I wouldn't trust it.

I've also had it pick up the signs on the backs of lorries a lane to the left.

 

[Exdro]

You could have the accident rate in a month if you reprogrammed all the speed cameras to detect tailgating instead...

Why would you want to have the accident rate. Far better to halve it?. Don’t you just love predictive text?

 

[AlexC]

Why would you want to have the accident rate. Far better to halve it?. Don’t you just love predictive text?

Enable cruise control spacing by default.

 

[ZTT]

Using the speed limiter do trust if reads the speed signs on my ZS gen2 reads the national speed limit signs on the motorway as 60, despite the satnav indicating 70.

 

[Rolfe]

Having the speed limiter there is no big deal, it's just something else to turn off. Not being able to turn it off? I think there might be an actual uprising.

 

[RayPalmer]

While it may sound reasonable to put such things into action under the 'safety' aspect, it is not suitable for general use as the comments clearly show the technology is very new and has many issues yet to be sorted out.
IMHO, this is a disaster waiting to happen. A person driving with such restrictions cannot go faster than the limit to avoid an accident and so will be part of one!

 

[kiwi]

100km/h speed limit for most New Zealand roads here. However, my MG4 Trophy/Essence 64 displays 120 at the start of the new express road to the north of Wellington called Transmission Gully. While it would be great that it was 120, it's certainly not that (yet)!