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Revealed: UK councils shrug at privacy worries, strap on body cams

Alan Brown Silver badge

" For instance why is it necessary to record so many traffic movements at so many locations? "

Statistical analysis of traffic flows in order to plan systems.

Such systems work best if individual cars can be identified to work out longer distance flow patterns (EG are cars taking the left or right route around an obstacle and are they rejoining the through flow afterwards or do they branch off to local destinations and as such need to be discounted from the calculations when you're trying to encourage through traffic not to take particular routes up rat runs) but as soon as they purpose has been achieved the identifying data should be purged. This period could be as short as 5 minutes.

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