Support Thread for the TND 500, TND 700 or future Rand McNally products. (part two)

Once he unplugged it, it should have booted up. Go easy on him, but it does sound like maybe a corrupted file. Note - since it is not booting up properly it may not show connected to the Dock although the computer will see it. This is because upon boot up it builds a file and if that file is missing then the Dock thinks it is not there.. All is not lost though.. When you get to a computer with the 720, PM me.


Thanks,
Mark

 

Under Truck tools you will see a icon for Tell Rand. This information is stored in the map data and is not visible.

I will check the viaduct issue.

Thanks,
Mark

 

Please refrain from any indications of swearing in this thread please. This site does not tolerate the use of swear words or the indication of abbreviations.

I put in the same route and all the settings take a little over 600 miles. Google Maps shows the same.



This is compare with St. Louis in the red box.



Under Preferences/Route you can vary your settings such as avoid freeways or prefer freeways.

As far as the turn issue, I would have to know where to give a more accurate answer.

Thanks,
mark

 

Roads are build into segments with both sides of the road acting as two different segments. So, you can have issues with one side and not the other.

All Tell Rands are looked at. If it is a Map issue then that is reported to HERE (NavTeq). They own the map data. If speed limits are changed, yes any information can take up to 1-2 years to make its way into the Map data.

Give me an example as I have the next set of Maps (not released yet).

It will also depend on what Model TND you have and how old your mapset is.

Thanks,
Mark

 

That part is now showing in the new maps (not released yet).

RM releases maps once a year. Once they are released to RM, then RM goes through a process to verify and test the new maps before they are released to the public.

What issues did you have with your 720?

Thanks,
mark

 

I will repost this.

When you drive you see a road be it concrete, asphalt, or dirt, you are seeing just the surface of the road you are on.

Maps simply cannot see what you physically are on. They are build into a Database which then are broken down into DCA's or regions. This may span across one state or many. In these DCA's the maps are broken down into segments. These segments are given many variables. These variables define who/what/how big/HazMat/STAA/Non-STAA and many more variables.

The roads are also given a "cost factor". This "cost factor" will determine if road A is better than road B for routing. In my area I have a "cost factor" of a road that is "0" which is an unknown. You will never be routed on a "0" road, but once I pass that segment then the TND does recalculate. It tries to pick several side roads that are a better cost factor than I am on, not the most direct way, but again it has to go by what is has set for in the parameters of the DB.

Any road segment is also broken down into sides of the road. One side may have different variables than the side you are on.

Now you add the Truck settings to the factor. When the router starts its "thinking" process it has to go by a set of instructions. These router instructions are tweaked for the best routing for all parts of the country. You can tweak the router to the East coast, but now routing will be indetermined for the West Coast. The router has to have a happy medium.

So based upon what your settings are and the physical location you are at, the router now determines a legal truck route since you are in truck mode. If you were in car mode the router would route you based upon what the parameters are in the segments.

Before on shortest route you used to be routed up a ramp then back to the freeway if you were in a curve. To a computer this is the shortest route. Does it make sense? Nope. So by adjusting the Cost Factor to make the ramp more "expensive" than the freeway, it now keeps you on the freeway.

Maps are not 100%. Cities, county's, and states change or modify roads or restrictions daily. Getting this info back to the source takes time and the source takes time to make the changes. Maps are not compiled daily. Due to the type of testing RM does before releasing a set of maps takes time.

It does not matter if you see 1 or 100 trucks on a side road. This does not mean it is a legal route for STAA or Non-STAA. Many cities, county's and states do not post signs for all restrictions or truck routes.

Trucks are allowed to go 1 mile off any interstate for pickup/delivery. Anything beyond that you have to go by what is legal or not legal.

Many places you go were build in prior years when Cab Overs and 48' trailers were the norm. Roads do not get upgraded all the time. This costs money, so the city's and county's have allowed STAA vehicles (53'/102") to make local deliveries. You will see signs showing local deliveries only, no thru truck routing. This usually means you are on a Non-STAA route. The TND does not see the sign nor know of it physical presence. You can change your Truck settings to 48'/96" and this will allow the router to now make a more informed decision.

If you don't like the route given, simply take the route you would like. The TND along with any other GPS will adjust the route. But, be aware you may be on a non legal truck route for your settings.

A rule of thumb. If it does not route you by your settings, then change to car mode. If it routes you, then it is a truck setting or restriction that is in play. If it does not route you then it is a map issue. Post it on the support thread and I will research it.

Not are restrictions in place are current. You may have come across a restriction that has been lifted. Based upon your set of maps you may see the restriction, but it may have been corrected in later maps. Not everyone updates the maps yearly. At truck shows I still see T5B's coming in. They are at least 5 years behind on the map set.

So all in all the TND is simply a computer going by a set of instructions and using the truck settings you have determined will try to find a truck legal route based upon the data in the segments of the map set.