Weird blue lines on Nuvi 760

Sounds like the trip log (track log) has been enabled. The Nuvi always keeps a log of where you have traveled, but you can choose to display it or not, and you can clear it at any time (but it will just start a new log as soon as it is cleared). You could try turning off the display option, clear it, or just leave it be.

The random lines going in any direction thing tends to happen just as the GPS comes on and acquires lock, and tends to settle down pretty quickly so that the random lines only occasionally show up where the GPS is first powered on or where it first gets a lock. After that the blue line tends to follow the road pretty well (also a feature of road-lock in Nuvi units, although I don't know why road-lock doesn't prevent the random burst of lines at the beginning).

As the Nuvi only stores so many points before it starts discarding the old ones, if you don't clear the trip log then eventually the random blue lines will go away, or at least be replaced by other ones. This may take a month or so, maybe more, depending on how much you use the GPS.

It's basically a breadcrumb trail of where you've been. If you are stationary, it will leave these kinds of points randomly since your position will jump (and be recorded in the trip log) even though you are stationary

First, hide the trip log:
Tools>Settings>Map>Trip Log: Hide

Next, clear the trip log if you have not used it or have any need for it:
Tools(arrow down)>My Data>Clear Trip Log

Clearing the trip log will also allow the nuvi (in some cases) to boot quicker and will allow much quicker connection to your PC...the long progress bar wait time on the nuvi (as the it's connecting to the PC) will be reduced to almost nothing. That is, until the trip log fills up again.

There is no way to disable it, only to hide it from the map view.

...sounds like two votes for the trip log...but just to be safe, first check to see if any of those weird blue lines connect with Roswell, NM...especially if any of them are flashing

Are they following roads and where you have been (then it is the tracklog).

Do you have multiple maps in your gps, an older firmware, and the lines straight? If so, upgrade your firmware.

I hadn't paid much attention to that function. Clearing the trip log really made a difference. Thanks for the tip!!

It's great how you can get such good help here. It's weird though, that Garmin won't let you turn off the trip log. On my 76CSx I can turn it off completely but on my nüvi 760 I can only hide it. I periodically delete it and never have it show on the screen.

Don't tell your wife that there is a detailed record of where she's been, when she was there and how fast she was going . . . could you use the information is a court of law?

I appreciate the info. I'll be turning it off (hiding, I guess), but not before I clear it out. Interesting feature, but I don't see when/why I'd need it.

Thanks again!!

I found it useful in fighting a speeding ticket.

How do you see where and when? I can see the trip log but don't know how to find where or when.

I can not understand why Garmin did not make a manual for their GPS. Wouldn't it be nice to know everything our gps will do.

OF COURSE there's a manual;

http://www.garmin.com/manuals/nuvi750-GPS-Atl_OwnersManual.p...

And there's one for Mapsource too:

http://www8.garmin.com/manuals/MapSource_MapSourceUsersGuide...

Import the Track Log into MapSource and your funny blue lines show the exact date and time of day, as well as your speed and altitude along each segment of the Track Log.

You can also import it into the free version of Google Earth now.

I am glad I saw this post. I was setting up a friends Nuvi 265T this afternoon and after the initial satalite lock we noticed blue lines appearing on the map. Thought it was a fault with the unit but now all is revealed. Switch of the track log.

Thank you so much. I guess this is easier for Garmin than putting it in the box!

I use Google Earth with the Mapsource (View in Google Earth)a lot. Love to look at where I am going before I go. Will try these tips.
Thanks.

I finally got the time, and turned off the "weird blue lines" tracker, and also cleared it out....what a difference in the loading time!

Thanks again everybody!!!