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Old 08-24-2009, 07:39 AM   #1
New Camper
Join Date: Jul 2009
Posts: 7
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I have been trying out various low

clearance avoidance tools after witnessing a horrible accident and

having a close call myself. Obviously I look out for the signs ahead,

but not all bridges are posted and it's no good for planning a route


So what are the options?

Rand McNally Motor Carrier Road


Pros - Much more than a low clearance

list, with an abundance of useful information.

Cons - Limited to just over 1000 low

clearances. Can't use while driving. Costs around $50.

Available at:

 low clearance POI

database for GPS

Pros - Free to download. Accurate.

Ready to install.

Cons - Limited data, not much more than

300 entries.

Available at:

 low clearance

POI database for GPS

Pros - Free to download. Accurate.

Cons - Limited data, approximately 400

entries. Many duplicates across several databases. Only available in

text format.

Available at:

 low clearance POI

database for GPS

Pros - Huge database, up to 10 times

larger than the others available. Accurate. Regularly updated. Ready

to install.

Cons - Costs $20 for annual


Available at:

There are also a few fully integrated

GPS systems available, but these are very expensive and I cannot

vouch for their accuracy or the number of low clearances in their


Hope this is of use.

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Old 08-24-2009, 07:49 AM   #2
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Join Date: Sep 2007
Posts: 1,415
Thanks for the info. will try
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Old 08-24-2009, 08:39 AM   #3
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Join Date: Aug 2007
Location: Michigan
Posts: 544
Great job of researching. Thanks for the information!
Al & Karyl

'08 Sunset Trail ST29RL

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Old 08-24-2009, 11:52 AM   #4
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pegger's Avatar
Join Date: Nov 2005
Location: Winnipeg MB
Posts: 79
This site may be helpful. We found it accurate and useful for trip planning in the New England area ofter Almost getting into trouble in the NY city area.
Gerry & Erika
O7 Cruiser 29CK
04 Silverado/Duramax
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Old 08-25-2009, 03:40 AM   #5
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gtoguy1967's Avatar
Join Date: Jan 2007
Posts: 479
Wow, Great info here. I never think about it unless it's marked. Had a bridge in PA that said 11'9. I went around and what a pain that was but we didn't have much choice. I wonder haw many of these are updated after they repave the road and take a couple of inches away ??
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Old 08-25-2009, 10:43 AM   #6
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Chrisnan23's Avatar
Join Date: Apr 2006
Location: KS
Posts: 863
They are supposed to cut in and maintain the height. Don't always do it but that's the rule. Next chance you have look and see if you can see the transition.
__________________ and Nan Nelson Molly the wild child Niya the half pint beagle
29RK we love 2006 F250SD with Triton V10

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