Navigational (global Positioning System) Gps problems of the 2014 Honda Accord

So far, no accident, but this trend to disable access to the navigation system while the car is in motion, even by a passenger is actually more dangerous than previously. It's highly distracting trying to use voice navigation and it always does not work very well. The alternative is to use a separate hand held gps or Smart phone, which can be potentially more dangerous and distracting. Has there ever been a controlled study that demonstrates disabling navigation access while driving is safer than the alternative? having used factory navigation systems for over 12 years, I strongly believe that disabling navigation systems while the vehicle is in motion is more dangerous, and represents a safety hazard if alternative routes are required in an emergency. For example, what if you are lost in a bad neighborhood, or someone is following you? you don't dare pull over and stop. I think this issue needs further attention.