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Originally Posted by borough
From where did you get the figure that trucks speedos have to be +-%1?
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My Mistake Mate. It's actually Speed limiters which have to be accurate to +/- 1%.
as per here..
https://www.legislation.gov.au/Details/F2006L02297
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65.6.1.6. The instantaneous vehicle road speed shall be recorded throughout the test with a road speed measurement accuracy of at least ±1% at maximum time intervals of 0.1 seconds.
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