Barrier
In the old Network Analysis, users could set point barrier only. In the new edition, the point barrier, line barrier and polygon barrier are provided, so that the real world traffic jam caused by disaster, accident or road construction can be also considered and reflected.
Point Barrier: Simulates the un-approachability of one single point caused by accidents, construction or falling tree.
Line Barrier: Simulates the roads that are not available to go due to a parade or traffic controls.
Polygon Barrier: Simulates the regional un-approachability of roads caused by flood or land subsidence.
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