Had this app for weeks and it was unable to give me any speed limits. Not one, not even the expressway. The first day that it actually worked, it worked fairly well. However it only worked for a short time before informing me that I had to obtain safety credits in order to keep using it. You have to login to the App Store to get more safety credits. I assume they cost money. So this app has tons of potential but up to this point it has been pretty much useless.