Will they be on the streets or on the roads????
http://www.stuff.co.nz/dominion-post...cut-open-hours
Quote Jan 2020 Posted by Katman
Life would be so much easier if you addressed questions with a simple answer.
In the US market the clock can be +/- 10%, however for liability reasons most if not all manufactures in that market won't read less than the speed the vehicle is actually traveling at.
For Europe under UNECU regulations a speedometer must never show a speed less than that which the vehicle is traveling and must not read a speed >10 of the actual speed. Th UK also adopted these regulations and so did Australia.
I don't have at hand the NZ regulations regarding accuracy, however I'm pretty sure the LTSA considers cars imported into this country meet international standards and therefore a 1Km/h tolerance is reasonable since any car built to international standards won't report a speed lower than it actually is traveling as manufactured.
I'm obviously a little bit off in when these standards were set but I'm pretty sure these standards did not come into play yesterday.
Also, to a point mentioned by someone regarding speedometer inaccuracy as the tyre wears. That's true but that would cause the clock to show an indicated higher speed than when the tyre is new (i.e. each revelation of the wheels is traveling less distance).
My biggest issue with these lower tolerances over the holiday period is witnessing what Joe Muppet does when passing a police car or even just a van parked on the side of the road. They're only doing between 90 and 95 indicated speed anyway, yet they STILL put the brakes on going down to 80 and 85 in a 100kmph zone. It's just madness...
I would have thought that it has been possible for all cars within the last 5 years to have had a GPS type speedo fitted. As for the manufacturers making the speedos reading fast, I dont see it as their responsibility to compensate for driver decisions regarding how fast they choose to drive.
Infact I'm suprised that in the land of lawyers, someone hasn't sued GM or Ford for selling him a car that reads 150mph "and I was really only doing 143mph your Honour".
" Rule books are for the Guidance of the Wise, and the Obedience of Fools"
There isn't a need, the existing setup it quite capable of being sufficiently accurate on unmodified vehicles. That's why your car/motorcycle reads xx% lower in speed, but still manages to record the correct mileage... given they both work from the same sensor, the only answer is that the manufacturer has specifically modified the speedo to read under.
I'm sure they also don't see it as their responsibility either. But the way the UNECU regulations are written the clocks must not show a speed less than which the vehicle is traveling. The UNECU regulations go on to permit them to show an indicated speed greater than which the vehicle is traveling by as much as 10%.
So while the regulations don't make it the responsibility of the vehicle manufacture to indicate a speed greater than which the car is traveling it strongly influences how the vehicle manufacture should best comply with the requirements.
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