The speed limit drops upon entering Fayette Co, Tenn east bound. I had a family member arrested, placed in jail in Somerville. IF I had not had a tracking device on that car he would have shown disappeared for several hours. We were tracking his trip (college kid). Jail would not permit a call even though my understanding is Tn law requires a call to family, or minister, or lawyer before booking. Using google locator I found his car and called the jail. They said no phone call until after booked. I kept calling them and finally they allowed a 60 second call. This could be your wife, husband, or child. Make sure you use google tracking when a family member takes a trip. Believe me, you or your family member could be jailed by a jail that will not permit a call. Without tracking you have no way of knowing where your loved one is. Off an embankment? Car jacked, kidnapped. Use google tracker.