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gzt

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  # 976866 29-Jan-2014 19:42
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[Deleted incorrect info about vehicle weight]

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  # 976881 29-Jan-2014 20:06
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mudguard: Speed is always a factor, rarely is it a stationery car, but how often is it excessive speed? Tell how fast someone left a corner, were they doing 104k, were they doing 130k? I've no idea how they would work out the speed in a crash now either. I presume they must estimate from the damage on the car.



On some modern cars if the air bags operate there is some retained data including the speed during the last few seconds. http://www.stuff.co.nz/national/crime/4006781/Airbag-data-convicts-driver

 
 
 
 


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  # 976885 29-Jan-2014 20:24
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Yep, just say it wasn't you.

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  # 976959 29-Jan-2014 22:54
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Bung:
mudguard: Speed is always a factor, rarely is it a stationery car, but how often is it excessive speed? Tell how fast someone left a corner, were they doing 104k, were they doing 130k? I've no idea how they would work out the speed in a crash now either. I presume they must estimate from the damage on the car.



On some modern cars if the air bags operate there is some retained data including the speed during the last few seconds. http://www.stuff.co.nz/national/crime/4006781/Airbag-data-convicts-driver


UK insurers offer car black boxes which record similar data to aircraft ones and they offer cheaper insurance policies to people who opt for them.





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  # 976962 29-Jan-2014 22:59
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RunningMan:
mudguard:

On a side note, do trucks have a lower maximum speed limit or are they the same as cars?


The lower of 90km/h or the applicable speed limit for the area.

http://www.nzta.govt.nz/resources/roadcode/heavy-vehicle-road-code/about-limits/speed-limits.html


Cars also have the 90km/h lower limit when towing - although the idiots that overtake you doing about 110 towing a huge boat clearly didn't get that memo....





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  # 976974 29-Jan-2014 23:32
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Get a lawyer that specialises is traffic cases.

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  # 977297 30-Jan-2014 12:32
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andrewNZ: My understanding is that a speedo is allowed to read 10% high (says 100 but you're travelling slower) but it absolutely must not read low.

In my experience, most modern cars read 5-10km/h high so there's a good chance you thought you were doing 110 anyway.


They deliberately read high, that way the manufacturers can not be held liable for any speeding tickets.


 
 
 
 


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  # 977359 30-Jan-2014 13:22
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Bung:
mudguard: Speed is always a factor, rarely is it a stationery car, but how often is it excessive speed? Tell how fast someone left a corner, were they doing 104k, were they doing 130k? I've no idea how they would work out the speed in a crash now either. I presume they must estimate from the damage on the car.



On some modern cars if the air bags operate there is some retained data including the speed during the last few seconds. http://www.stuff.co.nz/national/crime/4006781/Airbag-data-convicts-driver


Crash analysis is a specialist field that some police are trained in. There are some pretty basic physics involved and there are a variety of ways to estimate a vehicles speed from the physical evidence. Damage to the car is one method.




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gzt

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  # 977402 30-Jan-2014 13:49
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Interesting page here with links to research which NZ police and government use as evidence to create traffic policy.

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  # 977510 30-Jan-2014 15:39
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andrewNZ: Perhaps officers could have the option of (alternatively or additionally) making you sit quietly no phone, radio, or other distraction except perhaps a information leaflet for 15-30 minutes and think about it. Might stop people speeding if they're in a hurry. A 30 minute delay is a pretty big deterrent in many cases.


I think this would be a brilliant idea actually.
5-10k over 30 minute wait
20-30k, 1 hour
30k and over 2 hours...

Police could simply take your keys, and have then drop them back, or have another car do it on their way past. If the car moves (ie spare set in the glovebox) instant impounding or loss of licence.

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  # 977808 31-Jan-2014 08:28
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mudguard:
andrewNZ: Perhaps officers could have the option of (alternatively or additionally) making you sit quietly no phone, radio, or other distraction except perhaps a information leaflet for 15-30 minutes and think about it. Might stop people speeding if they're in a hurry. A 30 minute delay is a pretty big deterrent in many cases.


I think this would be a brilliant idea actually.
5-10k over 30 minute wait
20-30k, 1 hour
30k and over 2 hours...

Police could simply take your keys, and have then drop them back, or have another car do it on their way past. If the car moves (ie spare set in the glovebox) instant impounding or loss of licence.


Not so brilliant, IMHO... it's the thin end of a very long wedge for a person to be detained without any kind of judicial overview. Police can now do that for up to 15 minutes to "verify your identity". Allowing them to effectively imprison you (and your innocent passengers) in your vehicle is way over the top.

Given the dubious social benefits of driving at 100kph vs 105kph, it's completely unwarranted.


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  # 977817 31-Jan-2014 08:41
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frankv:
mudguard:
andrewNZ: Perhaps officers could have the option of (alternatively or additionally) making you sit quietly no phone, radio, or other distraction except perhaps a information leaflet for 15-30 minutes and think about it. Might stop people speeding if they're in a hurry. A 30 minute delay is a pretty big deterrent in many cases.


I think this would be a brilliant idea actually.
5-10k over 30 minute wait
20-30k, 1 hour
30k and over 2 hours...

Police could simply take your keys, and have then drop them back, or have another car do it on their way past. If the car moves (ie spare set in the glovebox) instant impounding or loss of licence.


Not so brilliant, IMHO... it's the thin end of a very long wedge for a person to be detained without any kind of judicial overview. Police can now do that for up to 15 minutes to "verify your identity". Allowing them to effectively imprison you (and your innocent passengers) in your vehicle is way over the top.

Given the dubious social benefits of driving at 100kph vs 105kph, it's completely unwarranted.



apart from the obvious 'tongue in cheek' comment you replied to, so what are the alternatives for the Police would it be better they have no right to hold anybody for questioning or verifying identity. 

sorry off topic but really some comments are just ludicrous 




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  # 978042 31-Jan-2014 13:03
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So the consensus seems to be no, because most speedos over compensate. That's fine, good to see it generated some discussion.

As I initially mentioned I wasn't going to bother pursuing it as it is only $30.

Was I aware I was going over the limit? Yeah possibly, if it was where I think it was - I drove just under 1k km's that week so it's hard to say definitively but there were times where I would look down and realised I'd crept over the limit and slow down. It also didn't help that I started using the satnavs gps as the odometer.


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  # 978243 31-Jan-2014 16:49
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gished: So the consensus seems to be no, because most speedos over compensate. That's fine, good to see it generated some discussion.

Was I aware I was going over the limit? Yeah possibly, if it was where I think it was - I drove just under 1k km's that week so it's hard to say definitively but there were times where I would look down and realised I'd crept over the limit and slow down. It also didn't help that I started using the satnavs gps as the odometer.



Whilst I guess there's no doubt about the *legality* of fining people for going 5kph over the limit, I think there is still a question of fairness.

Do car speedometers *always* over-compensate? Given that the rolling radius of your tyres will vary more than 5% over the life of the tyre (let alone with varying pressures due to varying temperatures), I still think that the small tolerance isn't fair.

Incidentally, given that you have a GPS, you *could* use the GPS as a far more accurate speedometer than the one in your dash.

Also incidentally, (and perhaps getting back to the forum's purpose) 6 or 7 years ago I read an article about a number of software bugs in cars, which included one motorcycle whose speedo would read low by as much as 25kph. And a car (BMW IIRC) whose ABS system would under some circumstances prevent the brakes from engaging when the pedal was pressed.


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  # 978278 31-Jan-2014 18:00
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C'mon, you're clutching at straws.

I'm not claiming to be a perfect driver, I'd go as far as saying I have some very bad habits. But bad habits, are no excuse for exceeding a limit.
A boss once said to me "there's no such thing as a good excuse", and now that I understand what he said, I fully agree.
We must be a speed limit, and it's useless if there is a tolerance.

I'd love to see a sports person say, "it was only a little bit over the line, give me a break".
Or a drunk driver say "it's only 439mg/l, I'm not that drunk, give me a break".

Over the line is in everything except driving at speed it seems.

Perhaps for rape could be ok as long as it's just the tip...




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