Speed Limit

[Agent_zed]

Static(ie not online) GPS systems need updating and that's sometimes stupidly expensive (£200+ for my Mazda <yeah right>) and aren't always correct anyway or only updated every year or more, so can be significantly out of date.
Even 'live' systems like Google traffic can get it wrong more often than you might hope.

Granted I haven't driven everywhere but my Tomtom has taken me to the French Alps numerous times and the Netherlands last year and I don't remember it showing any incorrect speeds outside of roadworks or variable speed limit areas.

It updates via wifi for free, so I just let it update at home before a long trip.

I wouldn't trust it for an actual limiter being applied but it is very useful as a reminder what the limit is when you are on a random road and missed a sign etc

 

[paulrbarnard]

How does it do that ? reliably ?

The car has a camera and a map. The map provides the speeds for all roads in EU and U.K. the cameras also have image detection and recognise speed signs and even signs like the start of town names in EU, which are de facto speed signs. There will be times when it gets it wrong. In the U.K. for example where we have a 20 limit sign on a side road and the main road curves older systems will misinterpret the speed as 20 for the main road. This is handled much better in newer systems where a higher level of map fusion is used and the perception system knows the most probable path is around the curve. Add to that crowd sourcing of information from vehicles to rapidly update the underlying map, maps used to take months to be updated, but for ISA it is going to be much faster in the future.

There are regulatory requirements for accuracy and coverage of ISA and it is tested as part of homologation of vehicles as well as being a tested category of ENCAP contributing to the safety rating of the vehicle.

 

[paulrbarnard]

Static(ie not online) GPS systems need updating and that's sometimes stupidly expensive (£200+ for my Mazda <yeah right>) and aren't always correct anyway or only updated every year or more, so can be significantly out of date.
Even 'live' systems like Google traffic can get it wrong more often than you might hope.

As a mandatory safety system ISA systems have to be kept up to date free of cost to the end user. Pretty much every vehicle released after the ISA requirements came in is on line with over the air updates. Some low end vehicles will rely only on camera and will see some false detection but it has to remain reliable and the vision system updateable for the life of the vehicle, typically 15 years.

 

[Spectric]

is on line with over the air updates

We all know what happens following updates !

 

[Rhossydd]

Some low end vehicles will rely only on camera

I admire you optimism on this
Yes, it's a theoretical possibility, in practice ? Unlikely in the next twenty years. Just too many practical difficulties, let alone the issue of legacy vehicles.

Have you had to have a windscreen replaced that has a camera built behind it yet ? Difficulties getting the part, having to wait for a specialist to fit it and calibrate the camera, then finding they didn't seal it well enough and condensation forms inside on cold nights..... and you're happy this tech will limit everyone's speed ?

 

[paulrbarnard]

I admire you optimism on this
Yes, it's a theoretical possibility, in practice ? Unlikely in the next twenty years. Just too many practical difficulties, let alone the issue of legacy vehicles.

Have you had to have a windscreen replaced that has a camera built behind it yet ? Difficulties getting the part, having to wait for a specialist to fit it and calibrate the camera, then finding they didn't seal it well enough and condensation forms inside on cold nights..... and you're happy this tech will limit everyone's speed ?

Uhhh it’s my job…

 

[Superduner]

The problem with sign reading speed monitors is that they can't tell the difference between general speed limits and those specifically for lorries. Here in France we have many cases where a speed limit is for "over 3 tonnes". My gps system (Sygic) interprets that as being applicable for all.

 

[Lons]

..........it would be better to fight for higher prison sentences, since all we really want are more appropriate sentences for causing death by careless driving.

Yebbut that's not going to happen is it. They've already stated plans to release prisoners after serving only 40% of sentence, no wonder the police are so frustrated.

 

[isaac3d2]

My views on driving may be a bit extreme but in my experience, more than half of drivers currently on the road should not be. Sure, they can start the car and make it go forward and even turn corners but I feel that is not a sufficient standard of driving skill to be allowed unsupervised on the public highway.
Personally, I think repeat driving tests should be mandatory every 3 years. To avoid "white van man" syndrome, all professional drivers (such as taxi drivers) and those using vehicles regularly for work (yes, white van man, I'm talking about you!), should be required to take pass the Advanced Driving Test.
Further, electronic tachographs/black boxes should be fitted to all vehicles and they should automatically report regular and persistent speeding infringements.
Am I not worried about "big brother" watching me? Absolutely yes! However, in the case of road safety I could be persuaded to give up some degree of freedom.

Ach, in the end all vehicles will be driven by computers anyway! I give it 10 to 20 years max.

 

[Terry - Somerset]

my standard car legally purchased in the UK will top 170mph yes not legal in the uk but I can drive to Germany wear it is so why ban it?

Research by the European Transport Safety Council (ETSC) in 2019 suggested that the German autobahn network was the 10th safest in Europe with a risk of death around twice as high as on motorways in the UK.9 Dec 2021

There is a price to be paid for unrestricted speed!

A bit like the gun lobby in the US - a fundamental freedom leading to ~20,000 murders with guns in the US vs 20-30 in the UK.

 

[paulrbarnard]

The problem with sign reading speed monitors is that they can't tell the difference between general speed limits and those specifically for lorries. Here in France we have many cases where a speed limit is for "over 3 tonnes". My gps system (Sygic) interprets that as being applicable for all.

Yes they can. It’s an ISA requirement. Of course gps and third party devices don’t know what your vehicle is but factory fit ISA has to know.

 

[jim1950]

Who’s freedom? I want my grandchildren to live to become adults without someone with small **** syndrome ‘accidentally’ killing them.

Just adding to offset my frustration reply above. I am so weary of the vehicular man slaughter findings in cases where someone in a vehicle kills a vulnerable road user. If ISA is mandatory and over ridden by the driver they are taking full responsibility so should then be charged with murder as they have pre meditated to remove the safety measures designed to protect others. I get frustrated in the extreme with the notion that people should be free to place others at risk.

"small **** syndrome" interesting, I find most people say that about things that don't interest them. We all have things that interest us and not others, my car reminds me of going car race with my dad as a kid and looking at all the cars you could never afford and of one of my ancestors the first man to do 100 miles in an hour on Feb 15th 1913 but I fully understand he killed himself a year later trying to go faster

 

[paulrbarnard]

"small **** syndrome" interesting, I find most people say that about things that don't interest them. We all have things that interest us and not others, my car reminds me of going car race with my dad as a kid and looking at all the cars you could never afford and of one of my ancestors the first man to do 100 miles in an hour on Feb 15th 1913 but I fully understand he killed himself a year later trying to go faster

I love fast cars and automotive technology. It’s not about the cars it’s about the drivers. Some one buying a fast car and driving it normally is not insecure in the manhood area. Someone in a 1ltr fiesta doing donuts on ice on the other hand is applying the “look at me not my small ****” principle.

 

[J-G]

one of my ancestors the first man to do 100 miles in an hour on Feb 15th 1913

That statement is incorrect on so many levels! Sorry.

I have an acestor who was 'into' high speed motoring - Barney Oldfield - who broke the world land speed record in 1910 at 131.7mph on Daytona Beach in a 21lt 'Blitzen Benz', but the first person to excede 100mph was a Frenchman - Louis Rigolly - on 21st July 1904 in a 13.5lt Gobron-Brillié (He died in 1958).

When interviewed after his World Record run, Barney stated; "Man will never go faster"

 

[jim1950]

That statement is incorrect on so many levels! Sorry.

I have an acestor who was 'into' high speed motoring - Barney Oldfield - who broke the world land speed record in 1910 at 131.7mph on Daytona Beach in a 21lt 'Blitzen Benz', but the first person to excede 100mph was a Frenchman - Louis Rigolly - on 21st July 1904 in a 13.5lt Gobron-Brillié (He died in 1958).

When interviewed after his World Record run, Barney stated; "Man will never go faster"

I take your point but look at it again 100 miles in an hour and go tell the Brookland museum it got it wronghttps://www.talbotownersclub.co.uk/history/landmarks-and-key-people/percy-lambert-100-miles-in-an-hour

 

[Blackswanwood]

That statement is incorrect on so many levels! Sorry.

I have an acestor who was 'into' high speed motoring - Barney Oldfield - who broke the world land speed record in 1910 at 131.7mph on Daytona Beach in a 21lt 'Blitzen Benz', but the first person to excede 100mph was a Frenchman - Louis Rigolly - on 21st July 1904 in a 13.5lt Gobron-Brillié (He died in 1958).

When interviewed after his World Record run, Barney stated; "Man will never go faster"

I think he’s right in that he’s saying his ancestor travelled100 miles in an hour whereas your ancestor reached/peaked at the speed you quote (and presumably then slowed down)?

 

[jim1950]

I think he’s right in that he’s saying his ancestor travelled100 miles in an hour whereas your ancestor reached/peaked at the speed you quote (and presumably then slowed down)?

look up Percy Lambert on the net off the top of my head he average speed for the hour long run was just over the 100

 

[J-G]

look up Percy Lambert on the net off the top of my head he average speed for the hour long run was just over the 100

I haven't 'looked it up' but do apologise Jim - I mis-read your statement, two different criteria !

 

[jim1950]

I haven't 'looked it up' but do apologise Jim - I mis-read your statement, two different criteria !

thank you

 

[Noel]

That statement is incorrect on so many levels! Sorry.

I have an acestor who was 'into' high speed motoring - Barney Oldfield - who broke the world land speed record in 1910 at 131.7mph on Daytona Beach in a 21lt 'Blitzen Benz', but the first person to excede 100mph was a Frenchman - Louis Rigolly - on 21st July 1904 in a 13.5lt Gobron-Brillié (He died in 1958).

When interviewed after his World Record run, Barney stated; "Man will never go faster"

Is Barney related to Mike and Sally? Ring any bells?