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I have a roadway network as a line feature and crashes as point features.

I need to count the number of points that lie between two intersections of roadways. The biggest problem is the road is also segmented and is not continuous throughout.

Please look at the below image:

Image 1 shows that I have to count points b/w two intersections. enter image description here

Image 2 shows roadway segments

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  • What license level do you have?
    – Emil Brundage
    Dec 12 '19 at 20:12
  • @EmilBrundage I have advance license
    – Parag Gupta
    Dec 12 '19 at 20:22
  • Do line features always have end vertices at intersections?
    – Emil Brundage
    Dec 12 '19 at 22:17
  • @EmilBrundage Yes, Sir.
    – Parag Gupta
    Dec 12 '19 at 22:28
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Your main goal is to create a single feature between intersections. Here's how to create single feature road features:

Perform an intersect on your road segments with output type set to POINT.

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Add XY fields to your intersect points.

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Dissolve points by POINT_X and POINT_Y fields. Use OBJECTID as a stats field, with stats type COUNT.

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Select your stats field COUNT_OBJECTID < 3 to select non-intersection vertices. Start and editing session and delete these points, or use the Delete Features tool.

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Dissolve your road segments into a single feature.

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Split Lines at Points. You'll have single segments between intersections.

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Now you just need to use a Spatial Join with your input feature class being your new lines and your join feature class being your crash points. You'll get a Join_Count field added which shows how many crashes were joined to each segment.

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  • Thank you so much for giving a detailed methodology here. Building on this, I have two questions: 1) can I maintain the link ids of segments that were formed into one link. So if there were 4 segments that were converted to one, would it also have link ids of the four links that were contained into one?
    – Parag Gupta
    Dec 13 '19 at 14:30
  • 2) Each road segment has a traffic volume number. Can I calculate the mean of the volume and then populate the final link(converted into one final line) with the mean number? Thank you again for uploading a detailed methodology.
    – Parag Gupta
    Dec 13 '19 at 14:34
  • @ParagGupta These sound like different inquiries and should be asked as new questions.
    – Emil Brundage
    Dec 13 '19 at 16:50
  • Thank you so much for your help. Appreciate it.
    – Parag Gupta
    Dec 13 '19 at 19:32

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