"Map routing is misleading"1.0 starson by cnetshu
Pros: nice interface. Have coordinate option
Cons: Routing misleading.
Summary: With routing option of ?Shortest Time?, Nuvi 770 frequently suggests routes that exit from highway to narrow local roads. The drives are more winding and take a lot longer.
My guess is that its routing is based on speed limit of each section. The problem is - when some sections have no speed limit, Nuvi770 assumes highway speed which is shown on GPS.
It happened many times in US. The worst time it happened was when we travelled in Europe. We tried to drive from Interlaken, Switzerland to Zurich Airport. There are highways linking the two destinations, as shown in google map. Nuvi770 suggested a route of local roads and inside cities.
Nuvi770 is not a reliable GPS. It can get you to destination eventually. But many times, it took you a lot of longer in winding roads. Hopefully it can be improved. My Nuvi770 has software version 4.9, the newest.
I have good experience with Magellen which I rented in Europe. It has much optimal routing. The problem is that it does not have coordinate option to find destinations.