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abstreet/docs/assumptions.md

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Modeling assumptions

This is pretty disorganized right now, just need to start something.

Sidewalk connectivity

Should it be possible to close sidewalks for construction? Right now, this breaks too many assumptions that're hard to recompute. Building front paths and bus stops are associated with a sidewalk, so that makes applying the edit way more unclear. Closing intersections is still useful -- remove all of the vehicle turns, but allow the walking turns.

Graph connectivity

For now, no map edits should be able to impact any of the trips possible in the baseline -- so no impacting graph connectivity, no killing bus stops, etc.

Over-taking

Unsupported right now, but it should happen.

Left turns in the middle of a road

Into a driveway, or using the shared left turn lanes. This should be supported. Parking and unparking already have the ability to block one queue -- extend that.