GPS speed limit detectors

TooManyPoints

2. No repeaters - but are there streetlights? Yes? Default urban limit.

Except on Motorways.

Car_54

Mildly_Miffed said:

3. No repeaters, no streetlights? It's default extra-urban limit, NSL.
3a. Count the carriageways. 1? 60. 2? 70.

For a car without a trailer, or a motorbike

motorguy

Mildly_Miffed said:

Hebrews12 said:

Just to clarify, the question was asked not because I had no intention of using my eyes and that I was going to rely on such a device and do whatever it said but more about something to assist me.  Sometimes, you can miss signs and wonder what the speed limit is where you are and having some kind of guide could be helpful.  Thanks for your replies.

Don't forget that there's a REALLY simply rule of thumb that will infallibly tell you the speed limit on ANY road in the UK within a couple of hundred metres, just by asking yourself a few simple questions.

1. Are there regular repeaters? If so, that's the limit.

2. No repeaters - but are there streetlights? Yes? Default urban limit.
2a. Are you in Wales? Yes? It's 20. No? it's 30*. 

3. No repeaters, no streetlights? It's default extra-urban limit, NSL.
3a. Count the carriageways. 1? 60. 2? 70.

* (with the exception of 20 zones that are "self-policing" through traffic calming.

It really is that simple. You learned this for your driving test.

As for relying on passengers... my driving instructor drummed that one out of me. He used to lie and say yes when it wasn't... If you come to an angled junction where you don't think you'll see clearly, square-off the angle you approach the junction to give yourself a better line of sight.

That doesnt look that simple at all.

Thats a fairly complex set of if thens to be processing constantly as you drive along.  

motorguy

Hebrews12 said:

I'm after something that acts like the thing on map apps that tells you what the speed limit is for the area you're in but something that can just sit on the dashboard somewhere rather than an app.  I'm not after something that tells me what speed cameras are coming up or something that tells me how fast I'm actually going.  There are some things online that are pretty cheap but descriptions about what they actually do are pretty sketchy.  Does anyone know if you can pick such a thing up at a reasonable price and, if so, if they're any good?

What car have you got?

Some cars had it as standard, some cars can have it enabled in the software, some cars can have it retrofitted.

In my last BMW and current BMW i got the "Speed Limit Indicator" capability retrofitted so it displays like this.  



It might be worth checking on facebook groups for your specific make model of car to see if it can be done.

MikeJXE

I drive a 2016 Jaguar, my satnav shows what the speed limit is in the location I am driving 

It’s not always accurate so I don’t rely on it 

If I miss a speed limit sign and there are house and or street lights I assume it’s 30mph until I am sure 

I do know if there are no repeaters it’s 30mph

Disregarding Wales 

ThorOdinson

Desmond_Hume said:

Jellynailer said:

A possible alternative is a speed limiter + eyes reading only main speed limit signs.

My EV has a button on the steering wheel to set the maximum speed and switch between 20,30,40.  Its brilliant for travelling across country through villages but with open stretches as well.  In town I only ever set it at 20 due to bad signage + traffic congestion anyway.  

I don't know if this function can be installed in petrol or diesel vehicles.

Speed limiters have been around for donkeys. Being petrol/diesel has no bearing on whether it can be installed or not.  Just if the manufacturer has it available for that model, either at point of purchase or as a retrofit. 

They are more common on EVs because of the lack of feedback from the gear/torque curve, lower noise levels, no engine vibration etc.

When I got my first one I found it was really helpful, as was the big digital speedo, because it was so easy for speed to drift upwards without you noticing.

ThorOdinson

Sometimes the signage is just wrong, especially where it's temporary. There is a stretch of motorway near me with roadworks, and the end isn't marked. Some people stay at 40, others zoom past at 70+. It's very dangerous and if there was an accident in sure one side would claim the other was speeding, while the other would claim the other driver was going dangerously slowly.

LightFlare

ThorOdinson said:

Sometimes the signage is just wrong, especially where it's temporary. There is a stretch of motorway near me with roadworks, and the end isn't marked. Some people stay at 40, others zoom past at 70+. It's very dangerous and if there was an accident in sure one side would claim the other was speeding, while the other would claim the other driver was going dangerously slowly.

What did they (whoever is managing the works)  say when you raised this safety issue with them ?

Mildly_Miffed

motorguy said:

Mildly_Miffed said:

Hebrews12 said:

Just to clarify, the question was asked not because I had no intention of using my eyes and that I was going to rely on such a device and do whatever it said but more about something to assist me.  Sometimes, you can miss signs and wonder what the speed limit is where you are and having some kind of guide could be helpful.  Thanks for your replies.

Don't forget that there's a REALLY simply rule of thumb that will infallibly tell you the speed limit on ANY road in the UK within a couple of hundred metres, just by asking yourself a few simple questions.

1. Are there regular repeaters? If so, that's the limit.

2. No repeaters - but are there streetlights? Yes? Default urban limit.
2a. Are you in Wales? Yes? It's 20. No? it's 30*. 

3. No repeaters, no streetlights? It's default extra-urban limit, NSL.
3a. Count the carriageways. 1? 60. 2? 70.

* (with the exception of 20 zones that are "self-policing" through traffic calming.

It really is that simple. You learned this for your driving test.

As for relying on passengers... my driving instructor drummed that one out of me. He used to lie and say yes when it wasn't... If you come to an angled junction where you don't think you'll see clearly, square-off the angle you approach the junction to give yourself a better line of sight.

That doesnt look that simple at all.

Thats a fairly complex set of if thens to be processing constantly as you drive along.  

Just wait until you find out how complex dealing with other road users can be.