Since we have a diesel with an off-road package (exhaust brake and hill-descent brake), that isn't a concern for us. To your specific question, I don't recall and the atlas is stored in our TT. For a quick answer, you might want to email Rand McNally specifically on that question - but I DO know it includes lots of trucker-related info. Also, where there are nasty grades (e.g., Grapevine in California), there a lots of U-Tube videos to give you a sense of what you are facing.
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Hattie
"I just go where I'm towed to"
Genealogy Community Social Group Moderator
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2015 White Hawk 25BHS w/Outdoor Kitchen
2015 GMC Sierra SLT 2500HD Z71/4x4 Duramax
Son's 2016 Ford F-150 Lariat SuperCrew 4x4 + gifted 1984 Coleman Sequoia Tent Trailer
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