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Extract the direction of polylines and transfer it to another set of polylines

Question asked by vik624r on Mar 21, 2018
Latest reply on Mar 21, 2018 by rborchert


Is it possible to transfer a direction of polylines to another set of polylines? Problem is the following: I have a road network with "oneway" column in it. I do a series of operations on the network in Model Builder to prepare it for further analysis with Network Analyst (I am using ArcGIS 10.4). However the direction of polylines is messed up (particularly after using "Unsplit"--"Feature to Line" tools).

Can I somehow extract the directions of initial lines and transfer it to result lines? I can not do this manually, coz the network is pretty large. 
Maybe extract start-end points from original data first, but how can I assign them to polylines as direction?

On the picture below: the red arrow is the original direction, the black arrow direction I get after using some tools in model builder. Thanks