34 Follow a Route
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Using the XT with Navigable Road Maps
Setting Off
Apps -> Trip Planner -> Saved Trips -> Find your trip -> Go ! -> Select Next Destination -> Start
Hopefully, you will have heeded advice and put the start point some way up the road. The satnav will navigate you to the start and will continue from there quite seamlessly.
If you put your start point close to where you switch on the satnav, rather than a mile or so up the road, then there is a chance that you didn’t actually visit the point that you plotted. If so, it will be trying to take you back to visit the start. Press Skip. It will tell you which point it is due to visit next. If that is the start point, then skip it.
How to do this is described and illustrated at the bottom of the next page.
Navigating
Going Off Route
You don’t have to follow the instructions - but it helps if you know what will happen if you don’t. For example - the route in Pic 1 is telling you to turn right in 80 yards. You can see that it goes to Ravenglass - there is a blue disc shaping point there, and then it will turn round and head to the orange flag Via Point - placed to the left of the junction ahead. Ravenglass is intended as an optional stopping place. The route navigates me to Ravenglass, but the fact that it is a shaping point means it is an easy point to ignore.
If you ignore the instructions the satnav will try to find another way to the same point. If you keep ignoring the instructions, it will ask whether you want to skip the next point. This is described on the next page.
In the example above, if you choose to turn left towards the flag, instead of right towards the shaping point, the satnav doesn’t complain and it will continue to navigate towards the flag.
Why does it do this, if it is supposed to take you to a shaping point ?
The answer is that it is supposed to keep you on the route, and the route
goes through the shaping point. Shaping Points are not ‘destinations’. They
are not points that you MUST visit. So if you miss a shaping point AND you
are still on the magenta route after the shaping point, then that is OK. It
will take you to the next Shaping Point or in this case, the next Via Point
(the orange flag).
You can miss out any number of shaping points like this, as long as you don’t miss out a Via Point. If you miss out (say) 3 shaping points and a Via Point and then join the magenta route after the Via Point, then it will not recognise that you are on the right route. It will continue to try to take you back to the first shaping point that you missed.
Random Comments
There are no rules. There are just ways to get the XT to behave in a way that makes sense to you. But the XT has a job to do, and that job is to plot a route between each of the route points in your trip in the correct order. If you have a lot of Shaping Points that are close together, it is going to try to get you to visit each of those points in turn. And if you end up on a road that misses out 10 points - it is going to spend a lot of time trying to get you to go back to the first of those missed points. Skip it and will will navigate you to the second, then the third and so on. That is until you re-join the magenta route.
If you deviate from the route and the next route point is 10 miles away - the XT will just calculate a new route to that point - using the fastest time, if that is what is set for the trip.
This means that if you decide to take a different route - it won’t be very long before the satnav stops nagging you and continues in the direction you are heading - because this way is now faster than going back to the original one.
Knowing that it is easy to miss out a shaping point makes it possible to put in an ‘optional’ stop. Put a shaping point at the potential stop, and put a (say) Via point on the route after the stop. (As in Pic 1). This ensures you are on the correct route whether you choose to visit the stop or not.
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The information on these pages has been acquired from personal experience of using and testing the behaviour of Basecamp and my Zumo XT. I have no links with Garmin, and these pages should not be regarded as instructions. They are presented for interest only. The contents of these pages must not be shared, copied, transmitted, redistributed or re-published in any form without my permission. (C) JHeath 2021.