11-22-2017, 10:38 PM
There is NO "perfect" GPS unit. As Onamuji pointed out, how a GPS unit is set, determines a lot re the GPS routing you'll receive.
Two different Rand McNally RV GPS units (7710RVND stand-alone unit & 720 software that was pre-installed on my RV) both have tried to route my RV onto NY parkways (where clearance can be LESS THAN 8'). RM also routinely tries to take me OFF the Cross-Bronx Expressway in favor of LOCAL ROADS (which are even MORE congested than the CBE). If I were not familiar with the areas in question and, blindly followed the RM GPS routing, at best, I'd be in very heavy local traffic and, at worst, risk having serious damage to the roof of my RV.
The first time I went to my dentist's new office, I had Google Maps active on my Samsung phone (using "OK Google") and, Apple Maps active on my iPhone (using Siri). At a critical intersection, I received conflicting directions. Being suspicious of Apple mapping, I went with Google's directions and arrived at my dentist's office without problem. I'm still suspicious of Apple Maps and Siri.
Two different Rand McNally RV GPS units (7710RVND stand-alone unit & 720 software that was pre-installed on my RV) both have tried to route my RV onto NY parkways (where clearance can be LESS THAN 8'). RM also routinely tries to take me OFF the Cross-Bronx Expressway in favor of LOCAL ROADS (which are even MORE congested than the CBE). If I were not familiar with the areas in question and, blindly followed the RM GPS routing, at best, I'd be in very heavy local traffic and, at worst, risk having serious damage to the roof of my RV.
The first time I went to my dentist's new office, I had Google Maps active on my Samsung phone (using "OK Google") and, Apple Maps active on my iPhone (using Siri). At a critical intersection, I received conflicting directions. Being suspicious of Apple mapping, I went with Google's directions and arrived at my dentist's office without problem. I'm still suspicious of Apple Maps and Siri.