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technical question about how the LRS treats slope distance

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04-22-2025 01:02 PM
NicoleHanson1
Frequent Contributor

I've been having upper managers ask about how accurate the LRS can be within R&H.  I've also been asked about how the LRS treats slope distance.  Has anyone else been asked this in their agencies/companies? Have you been able to find any information?  I don't know if I'm searching correctly.  

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2 Replies
MirekGroen
Occasional Contributor

Hi @NicoleHanson1,

With slope distance, I assume you mean the 3D length of a line in a LRS. As long as you use 3D data as input for your LRS, R&H is returning 3D objects, with both 2D and 3D length properties. Precision and accuracy is also depended on your feature class settings regarding resolution.

I hope this answers your question!

/Mirek

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AyanPalit
Esri Regular Contributor

@NicoleHanson1 The topic of  Roads and Highways and z-aware features, is documented at: 3D in Roads and Highways

While the software handles this scenario, the industry struggles with accurate and consistent elevation data along the features. It is important to consider both the state of the data and the related ArcGIS / Roads and Highways capability.

Ayan Palit | Principal Consultant Esri
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