<!-- This page is only transcluded into (displayed on) the main page for this state. See more detailed instructions below. --><noinclude>{{:USA/CommonState/ReturnPurge|{{SubPage2}}}}<br/></noinclude><!--
| type = critical
------ DO NOT MODIFY ABOVE THIS LINE -------- DO NOT MODIFY ABOVE THIS LINE ------>
| text = Junction boxes are currently able to be created and edited in the normal editor by Rank 5+ editors.}}<br>
[[File:Junction Box 7.png|right]]Junction boxes ''(JBs)'' are used to improve ETA calculations and routing through complicated intersections, and interchanges. Junction boxes are basically a hint editors can give the Waze routing services that “although these few segments are cut in a few places, they generally should be treated as a single point which connects traffic from several sources”. This hint helps the routing service get better ETA calculations and hence select better routes for Wazers.{{clear}}
{{AddCode|WYDOT is actively converting over 2,500 miles of highway to 70 mph speed limits.}}
The junction box enables a complex intersection, or interchange composed and displayed as multiple [[Glossary#Segment|segments]] to be treated by the routing server as a single [[Glossary#Junction|junction node]] with multiple inputs and outputs. Considering a complex intersection as a single point has several beneficial properties:
==== County road naming ====
* [[Routing_server#Turn delays|Traffic speed data]] for each path through the junction box can be collected separately.
* [[Glossary#Turn_Restriction|Turn restrictions]] can also be separately controlled for each path through the junction box.
* Additional beneficial features of a junction box will be listed here as they become available.
For [[Glossary#Estimated_Time_of_Arrival|ETA]] purposes, the [[Routing_server|routing server]] does not consider segments wholly within the junction box, but rather treats the junction box as if all the segments which enter or exit the the junction box are connected to at a single junction node.
[[File:WY-County-Blank.png|48px|left|frameless|Wyoming County]]County roads with the name designation of "County Road ##" or "Co Rd ##" are to be named in Waze as '''CR-##'''. This shortened version takes up less space on the map screen and is announced correctly as "County Road ##" while navigating with the Waze app.<br><br>
Junction boxes are considered only by the routing server. {{As of|2015|10}}, junction boxes have no effect on navigational prompts. Junction boxes have no visibility in the client or on the live map. Junction boxes do not effect the search engine; the origin or destination of route may be contained in a junction box.
==== Locking standard ====
==Improving data collection==
Wyoming lock standards are rather conservative due to the small number of active editors and the expansiveness of the state. Any road of a certain segment type must be locked '''at least''' to the rank listed in the chart below. Roads may be locked higher for protection and special situations (construction, confusing design, frequent mistakes, image inaccuracies, etc.), but should not be locked lower for an extended period of time.
<!-- This page, specifcally this entire section was reviewed 2015-11-10 by staff Ohad and confirmed as accurate. Staff quote "it looks really great, comprehensive and correct". -->
[[File:Junction Box 3.png|right|75px]]
Let's look at how a complex intersection can skew [[Routing_server#Turn_delays|turn delay]] transition speed data. Take the following intersection for example. It seems at first glance like a pretty simple intersection, but if it usually experiences heavy traffic this intersection could be collecting bad data.
{{Lock Standard State|WY}}
[[File:Junction Box 4.png|right]]
Assume that all the roads are two-way and all turns are enabled. Consider the drivers going from A to E, and from A to F, when there is a traffic jam for the left turn (at point D), but traffic going straight through D is flowing fine.
Without the junction box, the traffic from point A to point C is considered to be the same for both the red and the blue cars. The same statistical data is gathered and the average speed skews the ETA for everyone. The turn delay data is only different for the red and blue cars on the one segment before the turn at D, from C to D.
==== Roads named N, S, E or W ====
If you encounter any roads that are named N, S, E, or W, you must add a period (.) to the end of the letter. For example, West N Street is abbreviated as '''W N. St'''. This ensures the TTS system reads the road name as "West N Street" and not "West North Street".
[[File:Junction Box 5.png|right]]
==== U-turns ====
The junction box solves this problem.
With the junction box, historical and real time data are collected separately for each one of the possible routes through the intersection - all 12 of them.
U-turns in Wyoming are permitted when:{{ref label|1|1}}
{{columns|
* A ➡ B
* A ➡ E
* A ➡ F
* B ➡ A
* B ➡ E
* B ➡ F
* E ➡ A
* E ➡ B
* E ➡ F
* F ➡ A
* F ➡ B
* F ➡ E
|4}}
Now that the paths of A to F, and A to E are being measured separately, the traffic jam for the red cars turning at D does not have a negative effect on the blue cars going straight through D. Their ETAs are being recorded separately.
# The u-turn can be made in safety and without interfering with other traffic.
# Not upon any curve, or upon the approach to or near the crest of a grade, where the vehicle cannot be seen by the driver of any other vehicle approaching from either direction within five hundred (500) feet.
# Not explicitly prohibited by signage or local municipal law.
For Waze routing, u-turns should only be enabled where they provide the potential for improved routing, which includes recovering from missed turns. A common example is a median-divided primary street that has homes/businesses with their driveways/entrances directly on it, where reaching them would otherwise require lengthy, multi-turn deviations through side roads in order to end up on the correct side of the median.
Thus, [[Glossary#Update_Request|URs]] resulting from the inability to distinguish left turn delays from straight through traffic can be dealt with using the junction box.
These are the general guidelines for elevation in Wyoming:
* Drivable and non-drivable segments are handled the same way with elevation.
* Set elevation to ground in most cases.
** Segment(s) passing over other segment(s), rivers, major waterways, and ''all bridges'' shall have higher elevation, relative to ground.
** Only elevate/lower the actual bridge/tunnel section of the road.
** Elevation of overlapping segments should be set relative to each other, with the lowest segment as Ground (unless a tunnel).
** Tunneled segments shall have lower elevation, relative to ground.
** Only segments that "cannot see the sky" should have negative elevation (i.e. tunnels).
** Only set elevation as low/high as necessary.
* If you use the Bridge tool to join segments, be aware that it raises the elevation of the joined segment. Lower the joined segment as appropriate.
* [[Elevation_-_bringing_the_Seagull_to_Australia|"Seagull"]] guidelines apply to elevation in Wyoming.
** Bridges should be cut at the start/end of the bridge.
** Tunnels should be cut at least 15m/50ft '''before''' and '''after''' the tunnel, to allow time for the GPS to regain signal.
** Do not cut segments for elevation purposes if the bridge/tunnel starts/stops within 60m/200ft of an existing junction.
{{mbox|text=''There are many types of scenarios where a junction box may be indicated, this sample is used just to explain the function of a junction box, and not meant as guidance on where to use them.''}}
==== Speed Limits ====
[[File:Junction Box A.png|right|250px|thumb]]
To illustrate this concept, let's take a look at this intersection. There are five segments entering/exiting the junction box (segments which are only partially inside the junction box). There are another four segments which are wholly inside the junction box. If there were no junction box at this intersection the individual [[Routing server#Turn delays|turn delay]] ''AKA the time it takes to turn from one segment to the next'' data for the outer five segments would be merged together at the inner four segments, and be distorted. The junction box here alleviates the problems with collecting accurate turn delay transition timing caused by the short segments in the middle.
[[File:WYO VSL-sign.jpg|frameless|right]]
Wyoming Interstates include segments with 80 mph speed limits. These limits have already been applied according to WYDOT provided information.{{ref label|1|1}} Additionally, select highways fall under variable speed limits. These segments shall contain speed limit data for the highest posted and legal speed limit. At times, speed limits will be reduced by WYDOT due to inclement weather, traffic conditions or average motorist speeds. When speed limit reductions are in place, they are considered temporary and should not be reflected in the Waze map.
==== Timing ====
Live variable speed limit data is provided by WYDOT at the [http://map.wyoroad.info/hi.html Wyoming Travel Information Map]
<br><br>
If a junction box is drawn around these intersections (below left), then when considering a route that would traverse a segment within the box, the routing server treats the intersection like one large junction for the purpose of calculation transition timing ''AKA turn delays'' (below right).
[[File:WY-80mph.jpg|frameless|right]]<br>
A route path from segment C to segment E is treated as a single transition, even though in actuality it traverses four segments (3 transitions).
However, '''junction boxes have no effect on navigational prompts''' until phase 3 will be released. {{As of|2015|10}} Junction boxes currently only have Phase 1 (transition / ETA timing), & Phase 2 (path restrictions) active.
{{mbox|type=speculation|text=When Phase 3 (controlling navigation instructions) is released it will likely only affect paths which are specially marked for a custom prompt.}}
Looking back at our example path, going from C to E, let's analyze how the junction box works with navigation prompts. Our path is considered for routing as one transition, and judging by the angles it would be a straight transition making it a [[best continuation]] with no navigation prompt. But as we just said 'junction boxes have no effect on navigational prompts', therefore the actual navigation prompt given for this path (C to E) will consider the three junctions and produce:
* [[File:Big_direction_left.png|25px]] Turn Left onto Idlewild Rd, and then
* [[File:Big_direction_right.png|25px]] Turn right onto Indian Trail Fairview Rd".
This is to say that the navigational prompts are still controlled by the actual names, types, and angles of the segments within a junction box.
<!---- DO NOT MODIFY BELOW ------ DO NOT MODIFY BELOW ------ DO NOT MODIFY BELOW ----
{{Details|How Waze determines turn / keep / exit maneuvers|how to control navigation instructions}}
---- This page is only transcluded into (displayed on) the main page for this state.
== Controlling turns ==
---- It directly follows the common guidelines applicable to all states. When this
---- page is present (even if blanked), it displaces any optional code that might be
[[File:JB turn control.png|right|thumb|200px]]
---- in that section.
Junction boxes permit disabling multi-segment turns that are difficult to control in complex intersections. Without a junction box, controlling complex turns may require adding artificial segments and/or reducing the intersection to a single point using a [[Bowtie#Bow_tie|bow-tie]] configuration.
---- If the original optional code from the main page for this section is still
---- desired, it can be restored by adding the following code to the first line
Take this example of a junction between two streets with all turns allowed, but at the next junction with the highway some turns are not allowed depending on which street you originally approached from.
---- between the "DO NOT MODIFY" lines on this page:
---- {{:USA/CommonState/Major_roads|optional}}
When leaving {{Street|E Briarwood Cir}} here you may turn right or left onto {{Primary Street|S Havanah St}}, but if you turn right your options are limited at the next junction. However if you were already on {{Primary Street|S Havanah St}} from before E Briarwood, at the junction with {{Major Highway|E Arapahoe RD}} you are allowed to make either turn or go straight.
---- If there will be a full page for this section, use code similar to the wording
Without a junction box here our options to reflect these restrictions on the map would require creating an artificial AGC connecting north from {{Street|E Briarwood Cir}} to the junction of the {{Major Highway|E Arapahoe RD}} layered over {{Primary Street|S Havanah St}} (which is discouraged by waze as layered segments can cause data collection problems), or creating an artificial bypass AGC on {{Primary Street|S Havanah St}} which started from south of {{Street|E Briarwood Cir}} (which can look bad on the map). These options separate the traffic flow of those vehicles approaching on {{Primary Street|S Havanah St}}, from those vehicles approaching from {{Street|E Briarwood Cir}}. In either case we are adding artificial segments which are unnecessary and difficult to maintain on the map.
---- below to provide a hyperlink to that page. When creating the full page, use the
<center>[[File:JB turn control 1.png|300px]] [[File:JB turn control 2.png|300px]]</center>
---- link on the talk page to ensure the preload data is provided to help with
---- formatting the page. Don't just use the red link from this section once it is
---- saved.
[[File:JB turn control C.png|thumb|200px]]
----
With a junction box in place, we don't need any extra segments, we don't need to artificially alter any geometry of the segments, or to create a bow-tie. We use just the one segment of S Havanah St, and draw the junction box to include the intersection with the major highway and both approaches. We can then use the connections list in the left panel to select which paths through the junction box should be allowed, and which should be disallowed.
See [[{{BasePage2}}/Major roads]] for guidance in {{RootPage2}} that may not be universal to all other states.
----
In our scenario we want to restrict the two paths starting on {{Street|E Briarwood Cir}}, going north on {{Primary Street|S Havanah St}} and then straight or left at the {{Major Highway|E Arapahoe RD}}.
With the junction box selected, in the left panel there will be check boxes for each of the possible paths between the segment pairs. clicking on any of these paths on the left will highlight the path in purple on the map. We then uncheck the paths we want to disallow [[File:JB turn control C1.png|75px]].
---- 1. It is only providing a hyperlink to the full page for this section.
{{clear}}
---- 2. It is only providing some unique guidance for this state that differs from
<center>[[File:JB turn control 3.png|300px]] [[File:JB turn control 4.png|300px]]</center>
---- other states.
---- 3. It is intentionally wiping out the general optional content for this section
=Effects In Editor=
---- for this state.
Junction boxes can only be edited by editors of at least [[Your_Rank_and_Points#Waze_Map_Editing_Ranks|rank]] 5. Junction boxes appear in the Waze Map Editor when the [[Map_editor_interface#Layers|Junctions layer]] {{AddCode|add layer description to [[Map_editor_interface#Layers]]}} is turned on. Junction boxes appear as a polygon around all the junction nodes of an intersection.
All segments that enter the junction box are locked. Selecting a segment that is part of a junction box results in a message: "You cannot edit this segment. This segment is part of a junction and cannot be edited. Delete the junction to edit it."
Selecting the junction box causes the left pane to display the junction box properties. The properties show the editor that created the junction box and the date and editor of the last update to the junction box. If changes are needed to the junction box or segments associated with the junction box contact the identified editor or other rank 5 editor in your area.
[[File:Junction Box 2.jpg|600px|center]]
Each entry to the junction box is labeled with a letter in a green circle. Each exit from the junction box is labeled with a letter in yellow circle. Hovering the cursor over the letter circle will show the routes through the junction box that use the selected entry or exit. The left pane shows potential entry/exit pairs with a check box ticked for each pair enabled for routing. Note that only entry/exit pair paths which are fully visible on screen are displayed. So make sure you can see the whole boundary of the JB to be sure you're getting a full list of entry/exit pair connections in the left pane.
Routes through the junction box that pass through a single junction node are not considered. Such routes are controlled by turn restrictions in place when the junction box is created. Thus the route from A to G is controlled by a turn restriction and does not show in the list of entry/exit pairs.
Routes through the junction box that are prohibited by turn restrictions in place when the junction box is created are not considered. In the above example, the left turns from the southbound {{Major Highway}} use the dedicated turn lane. The left turn from the main lanes of the southbound {{Major Highway}} to the {{Minor Highway}} is restricted by an existing turn restriction. Thus, the junction box does not consider routes from the southbound {{Major Highway}} to exits G or H.
From the southbound {{Major Highway}}, routes to exits E and F pass through only a single junction node and routes to exits G and H are prevented by a turn restriction. The junction box thus considers no routes for the traffic entering from the main lanes of the southbound {{Major Highway}}. For this reason, this entry is not lettered.
=Editing=
Junction boxes are created by selecting Junction box from the [[Map_Editor_Interface_and_Controls#Draw_segments_menu|draw segments menu]] (Shortcut key {{key press|J}}). Click at one vertex of the junction box. Continue click to at each vertex of the box until the box surrounds all the junctions nodes of the intersection. Double click to complete the box. The boundaries of the box cannot be changed once created.
Before creating a junction box at an intersection, make sure that there are no incorrect turn restrictions. Routes through the junction box that are prevented by existing turn restrictions cannot be enabled in the junction box.
When a junction box is selected it can be edited. To select a Junction Box click on it.
When the junction box is selected, the left pane will show the potential contention paths through the junction box as illustrated above. Clicking the check box next to each connection path toggles between enabling or disabling routing between the indicated entry/exit pair.
The left pane includes a button to "Select included segments." Clicking this button will select all the segments with both ends in the junction box (these are the segments that are not considered for ETA routing purposes).
The left pane includes a name box and an address. A name can be added to the name box and the address may be edited. However, currently the name and address of a junction box has no effect.
To delete a junction box, select the junction box and click the [[Map_Editor_Interface_and_Controls#Delete_button|delete button]] [[File:Wme_button_delete.png|25px]] (Shortcut key {{key press|Del}}).
Changes to junction boxes (and adding new junction boxes) require a [[Tile_update#Updates|tile update]] to affect routing.
==Errors When Editing==
* '''No roundabouts''' - Junction boxes do not support [[Roundabout|roundabouts]]. Do not create junction boxes over roundabouts.
* '''Max size''' - The size of a junction box cannot exceed 1 kilometer. This is a linear 1 km limit north-south or east-west. If you draw an imaginary 1 km² box around the junction box, if the junction box pokes out at any point, then it's too big.
* '''Two junction node minimum''' - A junction box must include at least two junction nodes. Two junction nodes within the junction box must be connected by a segment. A junction box with only one junction node cannot be saved.
* '''No overlapping''' - A junction node cannot be included in multiple junction boxes.
* '''One connection per pair''' - A junction box must have only one connection for every entry/exit pair. If there are multiple routes available over the segments within the junction box between an entry/exit pair, the box is invalid and cannot be saved.
* '''Sixteen paths max''' - No more than 16 paths (in any direction) can pass through a single node within a junction box. A save error stating "The highlighted node cannot have more than 16 connections" occurs if a node has more than 16 paths. Paths are connections between two points/letters in JB plus "direct" unseen connections through the junction (that are not included in JB).
===Eliminating entry/exit pair connections===
Entry/exit pairs may be unchecked as appropriate so that there is only one connection between an entry and an exit.
[[File:JBEE1.png|600px|center]]
<br>
[[File:JBEE2.png|300px|right]]
[[File:JBEE3.png|300px|right]]
For the above junction box there are two paths from entry A to exit H. In this case to save the junction box the longer path shown in the upper illustration has been unchecked.
Unchecking entry/pairs will also reduce the number of paths that pass through a node within the junction box. In this case, there are fourteen entry/exit pairs that pass through the upper left junction node:
{{columns|
* A ➡ F
* A ➡ H
* A ➡ I
* A ➡ J
* B ➡ F
* B ➡ H
* B ➡ I
* B ➡ J
* C ➡ F
* C ➡ G
* C ➡ J
* D ➡ G
* E ➡ G
* E ➡ J
|3}}
The direct u-turns from B to G and C to H are disabled.
[[File:JBEE4.png]]
Thus, the internal routes from B to G and C to H are available. In this example these u-turns through the junction box are unchecked. If these paths were checked there would be 16 paths through the upper left junction node and the junction box would not save.
{{clear}}
===Adding complexity===
Adding segments or junction nodes to an intersection to workaround the "one connection for every entry/exit pair" and "no more than 16 connections per node" limitations is not recommended. If such a workaround is required please consult with your [[Country_Manager#Coordinators|country]] or [[Regional_Coordinator|regional]] coordinator.
=When To Use=
Junction boxes are suitable only for specific locations where the above listed functions of junctions boxes are required. If problems with data collection or turn restrictions are experienced then a junction box may be use to solve the problem. If problems are easily solved with other features such as [[Glossary#Turn_Restriction|turn restrictions]] or [[Routing penalties/Controlling U-turn penalties|U-turn penalties]], then a junction box should not be used.
Junction boxes require more space to store all the data involved. The routing server takes longer to analyse junction boxes and thus to provide routes through junction boxes. For these reasons, junction boxes should not be used for every intersection.
WYDOT is actively converting over 2,500 miles of highway to 70 mph speed limits.
State highway naming
Wyoming Highway
State highways are to be named WY-###.
County road naming
Wyoming County
County roads with the name designation of "County Road ##" or "Co Rd ##" are to be named in Waze as CR-##. This shortened version takes up less space on the map screen and is announced correctly as "County Road ##" while navigating with the Waze app.
Locking standard
Wyoming lock standards are rather conservative due to the small number of active editors and the expansiveness of the state. Any road of a certain segment type must be locked at least to the rank listed in the chart below. Roads may be locked higher for protection and special situations (construction, confusing design, frequent mistakes, image inaccuracies, etc.), but should not be locked lower for an extended period of time.
In PesachZ we have a set minimum standard for locking roads based on segment type. Any road of a certain segment type must be locked at least to the rank (level) in the chart below. Roads may be locked higher for protection and special situations (areas with construction, tricky design, frequent mistakes, imaging inaccuracies, and the like), but should not be locked lower.
A great time to implement these locks is while bringing the road types of an area into compliance with the current US road type standards (FC and highway systems). Lock the roads based on type after they've been set to current US road type standards.
PesachZ Minimum Locking Rank Standard
Segment Type
Statewide
Freeway
5
Ramp
Highest Rank of Connected Segments
Major Highway
3
Minor Highway
3
Primary Street
2
Street
1
• • • • Ferry • • • •
5
|-|-|-|-|-|-|-|-|-| Railroad |-|-|-|-|-|-|-|-|-|
2
Note: Certain roads may be locked higher than the above minimums. Please do not lower locks unless approved by the RC or SM of PesachZ.
Roads named N, S, E or W
If you encounter any roads that are named N, S, E, or W, you must add a period (.) to the end of the letter. For example, West N Street is abbreviated as W N. St. This ensures the TTS system reads the road name as "West N Street" and not "West North Street".
The u-turn can be made in safety and without interfering with other traffic.
Not upon any curve, or upon the approach to or near the crest of a grade, where the vehicle cannot be seen by the driver of any other vehicle approaching from either direction within five hundred (500) feet.
Not explicitly prohibited by signage or local municipal law.
For Waze routing, u-turns should only be enabled where they provide the potential for improved routing, which includes recovering from missed turns. A common example is a median-divided primary street that has homes/businesses with their driveways/entrances directly on it, where reaching them would otherwise require lengthy, multi-turn deviations through side roads in order to end up on the correct side of the median.
These are the general guidelines for elevation in Wyoming:
Drivable and non-drivable segments are handled the same way with elevation.
Set elevation to ground in most cases.
Segment(s) passing over other segment(s), rivers, major waterways, and all bridges shall have higher elevation, relative to ground.
Only elevate/lower the actual bridge/tunnel section of the road.
Elevation of overlapping segments should be set relative to each other, with the lowest segment as Ground (unless a tunnel).
Tunneled segments shall have lower elevation, relative to ground.
Only segments that "cannot see the sky" should have negative elevation (i.e. tunnels).
Only set elevation as low/high as necessary.
If you use the Bridge tool to join segments, be aware that it raises the elevation of the joined segment. Lower the joined segment as appropriate.
"Seagull" guidelines apply to elevation in Wyoming.
Bridges should be cut at the start/end of the bridge.
Tunnels should be cut at least 15m/50ft before and after the tunnel, to allow time for the GPS to regain signal.
Do not cut segments for elevation purposes if the bridge/tunnel starts/stops within 60m/200ft of an existing junction.
Speed Limits
Wyoming Interstates include segments with 80 mph speed limits. These limits have already been applied according to WYDOT provided information.[1] Additionally, select highways fall under variable speed limits. These segments shall contain speed limit data for the highest posted and legal speed limit. At times, speed limits will be reduced by WYDOT due to inclement weather, traffic conditions or average motorist speeds. When speed limit reductions are in place, they are considered temporary and should not be reflected in the Waze map.
