Speeding Margin to be axed.

[ssv 08 ute]

What a waste of a first post !!

 

[torch]

Why are they changing the tolerance?, because too many people out there treat the tolerance as the defacto speed limit, we have a large number of people driving around needling it on 63km/h.

What does it matter?

Possibly we don’t perceive any added risk to our daily motoring but over the population as a whole there will be a significant number of extra collisions if the fleet average is 3km/h higher. The other issue is that not all people push the defacto limit, so we have two groups of people on the road, those that stay under 60km/h by 5km/h or less and those that do 63.
As most of you know the less speed differential we have between cars the less chance of incident.

Im not buying the speedo inaccuracy defence, most are near dead accurate, judging by those that needle 63km/h(I figure mine is dead on too judging by gps, ground measurements and those freeway displays) If it isn’t giving the correct reading, people soon work out whether its right or not just by how fast they are going compared to everyone else.

By law you cant buy a car where the speedo underreads and it can only overead by 10% or less. So you’ve got an old clunker, find out what the speedo is doing, undereading, overreading....then drive accordingly, its not that hard to get someone in a newer car to help you out.

What about if you fit different sized tyres? Its the driver’s responsibility, either follow what the owners manual says are the correct size tyres(probably there is a warning in there about how they can affect the speedo reading)
So you don’t know much about cars and the tyre shop puts a larger tyre on? Perhaps there is some legal recourse if they didn’t explain to you that the speedo would be affected, but if you insisted on different sized tyres, then perhaps the responsibility goes back to the driver. Either way, speeding because you have oversize tyres on the car isn’t a valid excuse, there are also tyre size calculators/comparators that will let you see how much bigger the tyres are: Tire size calculator

The speedo wont underead if you use the manufacturers recommended tyre size, given that the recommended pressure these days is typically at least 30psi, but even if you go to the higher pressure rating of the tyre you wont exceed the quoted rolling diameter, there is very little change in a modern radial tyre once the tyre is over 30psi, , you’d have to put 50+ psi in them to get a significant change.
All that being said the pressure wont affect the rolling diameter, the actual tread length of the tyre wont expand with pressure.
The speedo is also calibrated for new tyres, the speedo can only begin to over-read as the tyres wear.

People will crash because they are always looking at the speedo, aren’t they already doing that when they are pushing the tolerances at the moment. No, it doesn’t appear that people are driving around blind, just a bit of hysteria by the “I should be able to drive at a speed that reflects my advancedcapability” brigade.

So you will get pinned if you do 61km/h, so just aim for 55 and you will have 5km/h of error, or just set the speed alert for 60km/h and instantly back off if you hear it, Im sure you are all good enough drivers to cope with that?

 

[nemesis_adrasteia]

your speedo will always read HIGHER then your actual speed, basicly providing you with a margin for error which is usually somewhere around 2-3 KM an hour. so whats the problem? if you cant maintain a a constant speed you shouldnt be on the road.

 

[Jesterarts]

If the majority of people started cruising around at 5kmph under the limit the number of homocides each year would rise.

This WOULD maybe work if people stuck by the keep left in 80 and over zones. Unfortunately, the "safe drivers" doing 5kmph under will be the same mob that are currently "safe drivers" and plod around in the right lane just under the limit with not another vehicle in sight.

I just don't understand what the point of this zero tolerance law is. What? Because it's specifically targeting people who currently drive upto 3kmph over the limit. Because if you're going 3kmph you're going to get done under current laws.

I would need to see some pretty concrete evidence that a significal amount of accidents caused by "speed" *cough* stupid *cough* involve a vehicle that was traveling between 1 to 3kmph over the limit.

 

[torch]

your speedo will always read LOWER then your actual speed, basicly providing you with a margin for error which is usually somewhere around 2-3 KM an hour. so whats the problem? if you cant maintain a a constant speed you shouldnt be on the road.

You've got it back to front: your speedo will always read HIGHER then your actual speed

 

[nemesis_adrasteia]

You've got it back to front: your speedo will always read HIGHER then your actual speed

yes sorry my bad, to many beers.

 

[gopher]

The answer is simple. Don't speed. 60 means 60, not 61, 62 or 63 etc. If that was the case the sign would read 60ish.

ok mum....

 

[torch]

If the majority of people started cruising around at 5kmph under the limit the number of homocides each year would rise.

This WOULD maybe work if people stuck by the keep left in 80 and over zones. Unfortunately, the "safe drivers" doing 5kmph under will be the same mob that are currently "safe drivers" and plod around in the right lane just under the limit with not another vehicle in sight.

Well, yes, with the way things stand at the moment try driving at 58km/h or thereabouts and you will have some aggressor up your bumper pushing you to do 63km/h. But pull the tolerance back and Im sure some of this antisocial behaviour will lapse.

Homocide, gay murders?

 

[EDGE3]

What the speedo expert was saying is that if you changed the size of your tyres that werent the factory size then your speedo would in fact be incorrect eg,from a size 20" down to size18" say your speedo read 100km/hr you would actually be doing 104km/hr so the speedo is showing a lower speed than your actually doing

 

[torch]

What the speedo expert was saying is that if you changed the size of your tyres that werent the factory size then your speedo would in fact be incorrect eg,from a size 20" down to size18" say your speedo read 100km/hr you would actually be doing 104km/hr so the speedo is showing a lower speed than your actually doing

Yeh, its not rocket science put larger diameter tyres on your car and the speedo will underead, and its the driver's problem, no one elses.