Bridge height info

[Quinny1]

If I install a certain bridge height poi, say 14'9" will my unit warn me of any bridge up to that height, or will I need to install others up to that value?

[Andy_P]

No, it won't, you'll have to install them all.

A POI is just a point on the map, nothing more, nothing less.
The TT doesn't know or care what it is, and all it does is show that point on the map display and (if you tell it to) sound a warning that you are approaching it.
So if you approach a bridge and you've installed a POI file called Low Brigdes 14'9", all that happens is the TomTom says "here comes a POI with that name".

Another major disappointment is that a TomTom cannot create route that avoid certain POI types, so it will still route you under a low bridge, and then tell you about it at the last minute.

The only way to do it properly, is to buy the full "truck" package from TT which has all the bridge heights in the map data and WILL route round them.

[wellchilledguy]

This a programme called ProCab, Google it, that may interest you.

[Andy_P]

I've just been reading the stuff on the ProCab website, and I'm not sure what you actually get....
As far as I can tell, it is just a POI collection, with categories relevant to truck drivers. Unlike the TT "Work" sysstem, I can't see any mention of any actual software that routes around the restrictions.
I could be wrong though....

[dhn]

Andy, I see this on their site:

Intelligent Warnings - "driver friend" feature
To avoid the problem just click on the "divert" or "detour" functions and the sat-nav will take you around the problem and then back to the best route as quickly as possible. Using our "Driver Friend" option - you can get proCAB PLUS to warn you about probelms based on the types of road you are driving.

So, maybe it will work as the OP desired.
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David

[Andy_P]

You're right, that does seem to be additional functionality, but a lot of it just seems very carefully written to imply it does more than a standard POI-equipped system. For example, it cannot CREATE a route which avoids low bridges...

[dhn]

Yep, you are correct there, Andy.

The functionality with that data seems to be that, on a bridge by bridge basis, you can get alternate routing........not the same as knowing from the start, as you said.
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David

[TomDavison]

Presumably, if you are concerned about bridge heights, the solution, as has been stated, is to buy the "commercial" package, which does resolve the problem. As long as Tom Tom is able to get an extra couple of hundred pounds for this function, it's never going to appear in the "domestic" versions.

[HappyTrucker]

[MrT]

If you had the time you could open the low bridges POI file (using POI Edit or similar) then go into Map Corrections and mark the road as blocked wherever there was a low bridge that you were likely to encounter. You would not want to share that false blockage via Mapshare.

You could do it on the unit for a particular route by planning a route then searching for a low brdige POI on that route then blocking the road at those points in map correction.

If you did not want to permanently avoid low bridges you could move the map correction files onto your computer and add them back to the TomTom when you needed to avoid low bridges.

Someone who has lots of time on their hands could go and produce map correction files for all low bridges then publish them for a particular map/version.
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Drivelux

[gluey]

Anyone know what file holds these corrections and how to read the file?

[Andy_P]

[gluey]

Hi andy,
I mean the map corrections file.
I know if i block a road on my map it will avoid it.
If you could load your corrections with the bridge locations it should avoid them.

Just need to know how to put them into the file in one go and not using the correct map error on the unit.

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