Island drivers are reporting satnav systems are already showing 20mph zones planned for introduction later this year.
A number of social media users say they've driven along 30mph roads on the Island - but their satnav units have recently started showing 20 limits.
It's led to questions about how the companies involved are getting the information, as a public consultation into the changes continues.
Douglas Central MHK Chris Thomas says he's noticed the changes outside Tynwald in Douglas.
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