Editing v0.31:Traffic

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-'''Traffic designations''' determine preferred paths for dwarves going around in your fortress. Normally, dwarves use the shortest route possible, using these designations you can force them to take a different route. This way you can set up for example main hallways or rarely used side corridors. Only your dwarves will obey your traffic designations, and then only when they can.  If a [[job]] requires that they go into a restricted zone, they will.  Other [[creature]]s will not recognize your traffic designations, and even [[domestic animal]]s or [[caravan]]s will follow their own pathing.
-Traffic designations can't solve all traffic problems. Though, some issues can be prevented by good [[Design strategies|fortress design]]. For example, you might make hallways that are likely to be busy two or more tiles wide, and place [[stockpile|stockpiles]] close to relevant [[workshop|workshops]]. Other difficulties may be reduced by designating traffic areas.
-Vegetation (saplings) will tend to die if repeatedly trampled upon, leaving dead [[Tree|sapling]]s or [[shrub]]s and quickly exposing bare [[soil]]. This may be desirable as [[tree]]s block dwarves' and [[caravan]]s' paths, but unchecked traffic may trample entire areas of [[forest]] regrowth.
-==Setting Traffic Areas==
-The {{K|d}}{{K|o}} combination sets '''traffic areas''', which are zones used to manipulate the movements of dwarves. Traffic areas can be designated as high, normal, low, or restricted. When walking from one point to another, dwarves consider these designations in finding the shortest path. High level traffic costs the pathfinding AI 1 point per square, Normal (default, undesignated) costs 2 points per square, Low costs 5, and Restricted costs 25. You can change the default values in [[init.txt]], or per-fortress values with {{K|d}}{{K|o}}.
-* It is often a good idea to set any [[water]] source in a [[biome]] with seasonal freezing to a Restricted area so your dwarves will be less likely to be caught on it when it melts.
-* Some dwarves get [[thought|disturbed]] if they walk through a [[butcher's shop]] and see an animal being slaughtered, so you may wish to designate the shop as Restricted.
-*Setting restricted traffic areas over undisturbed [[cloth|webs]] is a good way to prevent dwarves from destroying them.
-* If an area occasionally gets [[flood]]ed, or is dangerous for some reason, routing dwarves around it could be lifesaving.
-* Setting High traffic areas along [[road|roads]] outdoors prevents vegetation from being needlessly trampled.
-* An important use of traffic designations is to restrict movement in the tile where a [[ballista]]'s firing arrow originates.  This will prevent tragic [[siege]] training accidents.  Note that [[Pet|pets]] can and will be killed by firing ballista even if movement is restricted.
-Setting Restricted does not forbid a [[dwarf]] from traveling over those squares, but rather makes them willing to walk around them &ndash; for the normal cost table, 12.5 times further, or up to 25 times longer if there is an alternative high-traffic path. If you have an area that absolutely must not be stepped on by dwarves, consider [[wall|walls]].
-==Limitations==
-Traffic designations only affect path preferences when pathfinding.  Dwarves generally choose their jobs without weighing the pathfinding costs.  For example, one cannot use traffic designations to direct a dwarf to confine his digging to a specific area.  He will still take whatever path necessary to get to the job he has chosen to work.
-Additionally, traffic designations cannot be used to restrict where a dwarf will stand when building/digging.  In other words, traffic designations will not prevent a dwarf from placing himself on the outside of the fort when the last tile of a moat or wall is completed.  In some cases, a workaround is to place a wall where you want the dwarf to avoid standing, and suspend it.  This prevents him from standing on that tile while building.  When the job is finished, the suspended wall may be canceled. Note that this method doesn't work when you need something done via {{k|d}}esignations menu (channel, remove construction, etc.), in this case you can build a statue on a tile you don't want your dwarves to stand at.
-== Using Traffic Areas to Improve Framerate ==
-In cavernous rooms that handle large amounts of through traffic but have a small number of exits (a large central dining room, for example) designating a few high-traffic paths ("freeways") between the doors can help reduce the pathfinding cost for dwarves who are just passing through.  There may also be benefits to adding low-traffic edges to these freeways to keep the search algorithm from looking for shortcuts.  Likewise, any large dead-end room that branches off a major hallway should have the area around its doorway marked low or restricted traffic to prevent dwarves from searching it for shortcuts.  As noted above in '''Limitations''', this should not affect the dwarves who have a legitimate reason to hang out in the dining hall or visit the storage room - they will path to their destination regardless.  Users may see up to a 10% increase in FPS by implementing these changes throughout their fortress.
-----
-'''See also:'''
-:* [[Path]]
-{{Category|Designations}}

Editing v0.31:Traffic

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