Not quite sure what you are asking? I have an old Tom-Tom GPS, and it's got "Alternative Route" on it, which I can use if I hit heavy traffic or construction.
I would think that just about every GPS out there has that function, but I may be wrong?
Bill & Claudia / DD Jenn / DS Chris / GS MJ Dogs: Sophie, Abby, Brandy, Kahlie, Annie, Maggie, Tugger & Beau RIP: Cookie, Foxy & Gidget @ Rainbow Bridge.
2000 Winnebago "Minnie" 31C, Ford V-10
Purchased April 2008 FMCA# F407293 The Pets
I am talking about planning a route. With Mapquest you can simply drag to establish and alternate route and get the distance and time info immediately. Mine is also a TomTom and the alternate route thing is just plain frustrating!
1. Assume I'm traveling along on a route created by the GPS (pretend it's from Tucson to Albuquerque east from Tucson on I-10 then north on I-25 to Albuquerque by way of Deming NM). If I want to modify the route, I can choose some intermediate location (like Winslow), and enter it on the GPS as a waypoint. The GPS will then calculate a new route north from Tucson on I-10 to Flagstaff, then east on I-40 to Albuquerque.
2. Also, I can create several alternate routes on my computer, and load them into the GPS as "routes", and then when I'm ready to go I can select which route to use. This method can also be used to build several routes made up of partial routes, and then on the day, piece together a route made up of selected parts depending on current conditions, etc.
You might want to contact Tom-Tom, and see what they can do for you. If you unit has the slot for a memory card (SD, I think?), you may be able to download the route you want ahead of time?
I don't know if this is possible, but it might be worth some time on the phone with Tech Support?
I use a Garmin StreetPilot 2070. It came with a computer program call MapSource. This MapSource program allows me to plan my trip on the "large" screen PC. It is somewhat like MS Streets and Trips but I like MapSource - because I have used it more - more than S&T.
I can zoom in to an area, drag and drop route changes (I do not like someone in China or India telling me what route to take) and plan fuel stops.
This screen capture show a trip (with 38 different segments -- which I do not know how to do with MS S&T) of a 6,000 mile trip I planed.
Once I have planed the trip, I then upload to total trip to my Garmin StreetPilot 2720. Since I have different segments, I navigate each days trip one at a time. I name the segment 001 Nash to AL, 002 Al to MS, 003 MS to LA --- etc. After I have travel a segment, I can remove it from the GPS if I wish to.
Please give me enough troubles, uncertainty, problems, obstacles and STRESS so that I do not become arrogant, proud, and smug in my own abilities, and enough blessings and good times that I realize that someone else is in charge of my life.