M1 'horror' crash
Discussion
TheLordJohn said:
C70R said:
Bit in bold. Agree.
My E46 is unbelievably close to GPS (Waze) all the way to 100mph.
I've found any BMW I have owned have been remarkably accurate, all other cars, as above, exaggerated up to around 10%. My E46 is unbelievably close to GPS (Waze) all the way to 100mph.
FiF said:
Bit in bold, nope, not true. Mine reads a tad under 31 at a true 30. Sample of one. Need more samples?
So yours is close to 3% over? That demonstrates my point precisely: accuracy cannot be guaranteed from the factory. Thus they almost always read over. My current 4 year old car reads 32 in a 30. 54 in a 50. 76 in a 70.
My point rests, however, if the limit is 30, and the needle cannot be kept below that mark, then that is on the driver. You don't have to strive to stick right at 30, but if anybody is serious about not getting busted they can keep to 28 or less. My dad does it, worlds slowest driver.....
I'm not a fan of speed tickets, been out today for a long ride, trying to,watch for speed signs and keep legal. I was riding at an indicated 43 in 40 zone near Ashbourne, lots of repeaters, with a mahoosive huge truck ten feet behind me....
So tempting to tweak it up a bit and get ahead a ways......break the law......
Getting OT here, but my car over reads by about 10% on the speedometer (so 77mph is really 70), and also on the digital readout on the dashboard, but interestingly, when I've been plugged into the OBD2 connector, the speed that the ECU reports through it is much more accurate. So they deliberately calibrated the speedo to over read.
Also, on speed limits, over the last 20 years, many many roads have had their limits lowered, mainly by 10mph, 50's now 40, 40's now 30, 30 now 20. One of the big arguments behind this was 'because nearly everyone is speeding'. So now they've reduced the limits to compensate for that, but now they seem to be enforcing the limits much more rigidly as well, so it's a double whammy.
Also, on speed limits, over the last 20 years, many many roads have had their limits lowered, mainly by 10mph, 50's now 40, 40's now 30, 30 now 20. One of the big arguments behind this was 'because nearly everyone is speeding'. So now they've reduced the limits to compensate for that, but now they seem to be enforcing the limits much more rigidly as well, so it's a double whammy.
mjb1 said:
Getting OT here, but my car over reads by about 10% on the speedometer (so 77mph is really 70), and also on the digital readout on the dashboard, but interestingly, when I've been plugged into the OBD2 connector, the speed that the ECU reports through it is much more accurate. So they deliberately calibrated the speedo to over read.
Also, on speed limits, over the last 20 years, many many roads have had their limits lowered, mainly by 10mph, 50's now 40, 40's now 30, 30 now 20. One of the big arguments behind this was 'because nearly everyone is speeding'. So now they've reduced the limits to compensate for that, but now they seem to be enforcing the limits much more rigidly as well, so it's a double whammy.
On a MINI, you can actually code the speedo for true speed or to read slightly fast. It comes from the factory set to slightly fast. Probably plenty of other vehicles where this is the case too.Also, on speed limits, over the last 20 years, many many roads have had their limits lowered, mainly by 10mph, 50's now 40, 40's now 30, 30 now 20. One of the big arguments behind this was 'because nearly everyone is speeding'. So now they've reduced the limits to compensate for that, but now they seem to be enforcing the limits much more rigidly as well, so it's a double whammy.
Fun Bus said:
Prawo Jazdy said:
What has any of this got to do with the news story? Start your own thread and argue in there.
Now you've been here long enough to know that all threads go off topic after an average 56.5 posts about the original subject.AdeTuono said:
Fun Bus said:
Prawo Jazdy said:
What has any of this got to do with the news story? Start your own thread and argue in there.
Now you've been here long enough to know that all threads go off topic after an average 56.5 posts about the original subject.That is why it is a discussion forum, not a newspaper.
King Herald said:
FiF said:
Bit in bold, nope, not true. Mine reads a tad under 31 at a true 30. Sample of one. Need more samples?
So yours is close to 3% over? That demonstrates my point precisely: accuracy cannot be guaranteed from the factory. Thus they almost always read over. My current 4 year old car reads 32 in a 30. 54 in a 50. 76 in a 70.
My point rests, however, if the limit is 30, and the needle cannot be kept below that mark, then that is on the driver. You don't have to strive to stick right at 30, but if anybody is serious about not getting busted they can keep to 28 or less. My dad does it, worlds slowest driver.....
I'm not a fan of speed tickets, been out today for a long ride, trying to,watch for speed signs and keep legal. I was riding at an indicated 43 in 40 zone near Ashbourne, lots of repeaters, with a mahoosive huge truck ten feet behind me....
So tempting to tweak it up a bit and get ahead a ways......break the law......
Firstly that all cars do not have speedos which over-read by 5-10%, per your original claim. Secondly that other traffic's behaviour means you are not driving in complete isolation, certainly the lorry Speedo would be bang on. So you have someone with a speedo at your claimed 10% fast, so at 30 they are doing 27, but per your advice they knock another 3 off to be on the safe side, because it's easy. Meanwhile someone else with an accurate device is wondering why they are at 24 and some will look to pressurise or even pass.
Anyway your Dad isn't the slowest driver in the world, unless he drives an ancient Land Rover near Shelsey Walsh, Martley and Hallow and up towards Holt Heath. And if he is, FFS get his keys and his licence off him.
SantaBarbara said:
dvs_dave said:
On a MINI, you can actually code the speedo for true speed or to read slightly fast. It comes from the factory set to slightly fast. Probably plenty of other vehicles where this is the case too.
Which mini? A British Leyland one, or a Morris one?If he'd have written 'Mini' you would have had a, pedantic, point.
King Herald said:
AdeTuono said:
Fun Bus said:
Prawo Jazdy said:
What has any of this got to do with the news story? Start your own thread and argue in there.
Now you've been here long enough to know that all threads go off topic after an average 56.5 posts about the original subject.That is why it is a discussion forum, not a newspaper.
TheLordJohn said:
SantaBarbara said:
dvs_dave said:
On a MINI, you can actually code the speedo for true speed or to read slightly fast. It comes from the factory set to slightly fast. Probably plenty of other vehicles where this is the case too.
Which mini? A British Leyland one, or a Morris one?If he'd have written 'Mini' you would have had a, pedantic, point.
FiF said:
But you're also making my points.
Firstly that all cars do not have speedos which over-read by 5-10%, per your original claim. Secondly that other traffic's behaviour means you are not driving in complete isolation, certainly the lorry Speedo would be bang on. So you have someone with a speedo at your claimed 10% fast, so at 30 they are doing 27, but per your advice they knock another 3 off to be on the safe side, because it's easy. Meanwhile someone else with an accurate device is wondering why they are at 24 and some will look to pressurise or even pass.
Anyway your Dad isn't the slowest driver in the world, unless he drives an ancient Land Rover near Shelsey Walsh, Martley and Hallow and up towards Holt Heath. And if he is, FFS get his keys and his licence off him.
Well I was on my bike today, haven't tested the speedo on that against a sat nav yet. But if, like you say, the lorry speed is dead accurate, do I set my speed to following traffic, do I trust that he is actually obeying the letter of the law? Maybe we were both doing exactly 40, and just happened to be ten feet apart...Firstly that all cars do not have speedos which over-read by 5-10%, per your original claim. Secondly that other traffic's behaviour means you are not driving in complete isolation, certainly the lorry Speedo would be bang on. So you have someone with a speedo at your claimed 10% fast, so at 30 they are doing 27, but per your advice they knock another 3 off to be on the safe side, because it's easy. Meanwhile someone else with an accurate device is wondering why they are at 24 and some will look to pressurise or even pass.
Anyway your Dad isn't the slowest driver in the world, unless he drives an ancient Land Rover near Shelsey Walsh, Martley and Hallow and up towards Holt Heath. And if he is, FFS get his keys and his licence off him.
The best anybody can do is drive to their own speedo and make sure it reads 30 or less. Apart from using a sat nav, what else can your average driver do to reduce fines?
And my dad, well, picture a T junction in the middle of the dead flat Arizona desert, visibility measured in light years in all directions, not a vehicle in sight.... my dad will do a full stop at that junction, check left, right, left again, before pulling out.
MrNoisy said:
I've said it on here before on a different thread. We are importing other countries very poor standards of driving for some reason, it shouldn't be tolerated.
"For some reason" - hmm, many.Those who have worked hard to be courteous, professional, law-abiding truckers see those with little language skills, litle respect, little invested getting work and getting away with stuff and think "well, why shouldn't I?"
Successive governments have explicitly demonstrated - by word and deed - how they simply don't trust the populace, and certainly don't respect them. Slowly, step by step, the social contract that binds society together is eroded and destroyed. "I'm alright Jack" becomes the norm. Selfish people make selfish choices, and expect - and therefore accept - selfish actions by others.
Policing is a shadow of its former self, with massively disproportionate emphasis upon speed control / detection / prosecution; bang the single issue drum for long enough and lo and behold people stop caring so much about the other issues.
And so on and so forth. Very sad. Very demoralising. Very predictable. And very hard to undo.
King Herald said:
Well I was on my bike today, haven't tested the speedo on that against a sat nav yet. But if, like you say, the lorry speed is dead accurate, do I set my speed to following traffic, do I trust that he is actually obeying the letter of the law? Maybe we were both doing exactly 40, and just happened to be ten feet apart...
The best anybody can do is drive to their own speedo and make sure it reads 30 or less. Apart from using a sat nav, what else can your average driver do to reduce fines?
And my dad, well, picture a T junction in the middle of the dead flat Arizona desert, visibility measured in light years in all directions, not a vehicle in sight.... my dad will do a full stop at that junction, check left, right, left again, before pulling out.
Actually the best you can do, without resorting to physically recalibrating the Speedo by adjustment, is to determine the error in the readings by comparison with sat nav first, and then a secondary check using an official measured mile, as one example. That's what I've done, anal, yes, takes a bit of effort, yes, worth a periodic check, yes. But if you know that at a true 50, say, your speedo reads 52, then you just keep it below 52, assuming suitable graduations on the scale. That's what I do, it's quite simple, it keeps you legal and, for example, on those looooong motorway road works with average cams you are usually one of the ones making best legal progress.The best anybody can do is drive to their own speedo and make sure it reads 30 or less. Apart from using a sat nav, what else can your average driver do to reduce fines?
And my dad, well, picture a T junction in the middle of the dead flat Arizona desert, visibility measured in light years in all directions, not a vehicle in sight.... my dad will do a full stop at that junction, check left, right, left again, before pulling out.
As for your Dad at the T junction, maybe he has read this, Dropbox link
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