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On a project I came to the following problem in ArcGIS 10.6.1:

I have a road network which consists of paths, local roads, national roads and highways. I have also a bunch of possible facility locations. Some of the facilities are located near a highway. Since the facilities cannot have a direct access to highways, I want to prevent the facilities to be located on highways.

I found this question already here: Restricting portions of road network from analysis in ArcGIS Network Analyst?

I want to apply @Alex Tereshenkov idea of not locating the facility near those restricted routes, but to still let them run through them. I added in my road network layer a coloumn called RESTRICTED (Type: Integer) with the following idea behind:

0 = no restriction  
1 = prohibited to locate facilities on this road  

I fail however to define in the network dataset that the facilities are prohibited to be located on highways.

What am I missing here?

The very same problem to tell the network dataset that some roads are unilateral while others are bilateral.

1 Answer 1

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First of all, read Using parameters with network attributes to understand the concept behind networks and restrictions. Then using the information found in Types of evaluators used by a network, we can use the pre-composed one-way restriction:

These expressions determine the permitted directions of travel based on the text value in the Oneway field:

FT or F = Travel is only permitted in the digitized direction of the line feature (the from-to direction).
TF or T = Travel is only permitted against the digitized direction of the line feature (the to-from direction).
N = Travel is not permitted in either direction.
Any other value = Travel is permitted in both directions.

By using the FT or F, TF or T, N and any other value, the restriction set in the Oneway coloumn of the attribute table, does the trick.

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