Congratulations, the correct speed, when within a camera zone, is indeed spoken and shown correctly.
It looks like what you have done is changed the speed for each camera, in the text file, from M.P.H. to Km.P. H., as i suspect Luna always reads the text file speed in metric. It then converts that speed to M.P.H.
I guess that this then means that if you update the text file you have to repeat the calculations for the new file.
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