GPS units will automatically alert you when you enter into a different speed zone, but they do not alert you when you enter into a high crime area. It seems that this would be valuable information to know when driving in unfamiliar places so you can quickly exit the high crime area, or map a new route that goes around it before you enter into it.
From researching this today, I found out that crime mapping services currently exist because law enforcement agencies have been using Geographic Information Systems (GIS) to keep track of high crime areas for many years now.
So, this made me wonder if there may be a legal reason why GPS units do not provide this kind of information to drivers. I did a few Google searches for a law that bars GPS manufacturers from providing crime mapping data to GPS units but I did not find any such law, yet I am still curious to know if such a law exists.
Is it against the law for a GPS unit to alert a driver of a high crime area?