Satnavs added a via point to a route!!!???

[Peobody]

The image below in from my BaseCamp route. Unnoticed by me before the ride was that the route diverts through the parking areas of the Craggy Gardens Visitor Center. There is no route point there. My XT and my buddies Nav VI added the Craggy Gardens Visitor Center to the route as a via point. The routing by BaseCamp through those parking areas is odd but I can see how the parking areas could be interpreted as the right lane of the road (direction of travel is N to S). I sure don't understand the addition of the via point though. Anyone ever experienced that?

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[rbentnail]

Yep, get it all the time- parking lots, off/on ramps, rest areas- the XT chooses what it wants sometimes. I find significantly more points are required for "correct" routing and even then it will often go to a point and u-turn rather then continue on.

[Peobody]

Yep, get it all the time- parking lots, off/on ramps, rest areas- the XT chooses what it wants sometimes. I find significantly more points are required for "correct" routing and even then it will often go to a point and u-turn rather then continue on.

Yup, routing anomalies are common. My issue is the fact that a via point at Craggy Gardens Visitor Center appeared in the route on the XT. I did not add it and it is not in the BaseCamp route that was sent to the XT. This route recalculated at the start of the day due to an errant screen tap that changed a shaping point into a via point. I suspect that recalc is when the Craggy Gardens via point was added. All of my route point names were prefixed with a day number and route point sequence number (eg: D1_07_RoutePointName). The Craggy Gardens via point was not prefixed.

[jfheath]

This route recalculated at the start of the day due to an errant screen tap that changed a shaping point into a via point. I suspect that recalc is when the Craggy Gardens via point was added. All of my route point names were prefixed with a day number and route point sequence number (eg: D1_07_RoutePointName). The Craggy Gardens via point was not prefixed.

If you screen tab the route info on the XT and it changes a Vai to a Shaping point, the shaping point is usually relocated and renamed. Its new position sometimes forces the route to be on the XT's 'faster' way between the two adjacent route points. This has been acknowledged as a fault by Garmin.

Route point names get changed when transferred from BAsecamp to the XT. It seems to take the latitiude and longitude and finds the nearest named place that matches those coordinates. I don't know that for sure, but that is what I think. It doesn't do it with every point, but significnatly more than half in every route is altered in this way. I think it might be to cater for the fact that so many people use other mappiing software and other maps - so route points are rarely accurately placed. Doing this (if this is what is happening) would result route points being placed in a feasible location.

If you don't want this to happen, then creating Garmin's Waypoints (flag tool in Basecamp, Favourites / Saved in the XT) with the name of your choice and build the route using them. They can then be set to be either via points or shaping points. Those place name never get changed.

Names given by points created in MyRouteApp are often retained as they were, but I don't think that is always the case. Not sure.

But I have seen and added Via Point when I was testing the route behaviour. One was placed at the point of deviation, and it appeared in the list of points to Skip, but it did not show on the map. I repeated the identical test the following week, and couldn't get it to do it again.

[Peobody]

I can't make sense of what could have happened. There is no route point near Craggy Gardens in the BaseCamp route so I don't see how it could be a shaping point changed to a via point. The odd routing through the parking areas by BaseCamp would appear related to the XT adding a via point. When I have a few dedicated minutes I intend to resend that route to the XT and check it for a Craggy Gardens route point. If none, I'll force a recalc and see if it adds it again.

BTW, I looked on my XT in Where To > Saved for the Craggy Gardens via point but it is not there. I guess this makes sense. I would only have been added to that list during import of the route had it existed in the first place, right?

[Peobody]

I now think that I am wrong about my XT adding a waypoint.

I have been unsuccessful at duplicating the added waypoint. What I saw that now makes me think I was wrong is navigation instructions that say "Keep right on Craggy Gardens Visitor Ctr". There were two of these at the entrance to each parking area. My buddy with the Nav VI stated that he had to skip a Craggy Gardens waypoint but I now question whether that was actually the case. Regardless, at the time of the ride I was unaware of the route going through the parking areas so the navigation instruction appeared to be directing us to the Craggy Gardens Visitor Center as if it was a via point. @rbentnail and @jfheath, Please accept my apology for sending you on a wild goose chase.

[jfheath]

No wild goose chase for me. My route definitely added one. I have it documented. I don't understand why it won't repeat it.
But I'm not researching it. Too much fun to have, too little time !