New answers tagged multimodal-network
I had the same problem and read this post http://forums.arcgis.com/threads/26566-Build-errors-in-Network-Dataset hope it will help you, just exclude the stops in the network, it worked for me.
Based on what you said, let's consider that you want to minimize the walking distance from point A to point B. Stated like this, you need to solve your model based on the minimum walking distance, which means that the "cost" of the metro is "zero". This will force network analyst to use metro more often, though you will avoid using metro in trivial cases ...
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