I live in Tasmania and after a few weeks of using my Nuvi 1390t I have only encountered a couple of instances of speed limits being displayed on the screen. The only time they seem to show up is when I approach (some) 40 km/h school zones.
I was under the impression the maps would display the speed limit of most roads. Is that too much to ask ?
Perhaps I am living in a low priority area where speed limits haven't yet been added to the data set for the maps. What should I be expecting?
I've noticed that too and I live on the mainland. I think if someone has uploaded the poi then they will work, if no one has uploaded the alert on a particular road well you just have to wait until someone does. Just update your poi once a month or two.
I have recently purchased a 3790T & am pleased to say that for the areas I drive in ie Melb suburbs & CBD the speed limits indicated are 100% accurate & coverage is 100%; I am extremely pleased with this functionality, my only issues is that no audible alert is provided when you exceed the limit!
I also have a Navman MY50T & this does not provide any speed limit info.
I live in Sydney and the speed limits (various and changeable often) are displayed. I have also travelled in the bush where highway speeds are indicated as are the speed limits in the majority of country towns. They are generally pretty accurate. Still one must keep one's eyes open.