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== Introduction == | == Introduction == | ||
Understanding how and which instructions are provided requires first understanding a few concepts. | Understanding how and which instructions are provided requires first understanding a few concepts. | ||
* This page | * This page discusses the instruction which will be provided (or not provided) by the Waze server when traveling from one segment, through a [[Glossary#Junction_or_Junction_Point|junction]], and onto a second segment. | ||
* How [[How_Waze_determines_turn_/_keep_/_exit_maneuvers#Best Continuation|''best continuations'']] work. Any time the destination segment is the | * How [[How_Waze_determines_turn_/_keep_/_exit_maneuvers#Best Continuation|''best continuations'']] work. Any time the destination segment is the ''best continuation'' no instruction will be provided by default. | ||
* The lack of an instruction to the best continuation, as well as other default behaviors, can be overridden by the use of [[turn instruction override]]s. | |||
While the illustrations displayed by each question may not represent every possible variation, they do represent the difference between the two options in that question. Please choose the most appropriate answer. | While the illustrations displayed by each question may not represent every possible variation, they do represent the difference between the two options in that question. Please choose the most appropriate answer. | ||
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{| border="1" cellpadding="10" | {| border="1" cellpadding="10" | ||
|- | |- | ||
! scope="col" bgcolor="lawngreen" | '''[[# | ! scope="col" bgcolor="lawngreen" | '''[[#32|YES]]''' | ||
|} | |} | ||
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|- | |- | ||
! scope="col" bgcolor="orangered" | '''[[#The_navigation_instructions|<span style="color:white">NO: A turn instruction override is set. See the navigation instructions</span>]]''' | ! scope="col" bgcolor="orangered" | '''[[#The_navigation_instructions|<span style="color:white">NO: A turn instruction override is set. See the navigation instructions</span>]]''' | ||
|} | |||
---- | |||
{| style="float: right; color:lightgray; font-size:65%; " | |||
| (32) | |||
|} | |||
{{anchor|32}}Is the origin completely inside a [[junction box]]? | |||
{| border="1" cellpadding="10" | |||
|- | |||
! scope="col" bgcolor="lawngreen" | '''[[Junction box#Voice prompt|YES => Junction box routes with turn instruction overrides suppress further instructions inside the junction box.]]''' | |||
|} | |||
{| border="1" cellpadding="10" | |||
|- | |||
! scope="col" bgcolor="orangered" | '''[[#30|<span style="color:white">NO</span>]]''' | |||
|} | |} | ||
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=== Continue straight=== | === Continue straight=== | ||
This must be manually | This must be set manually by the turn instruction override '''Continue''' and is never automatically selected. | ||
{| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | {| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | ||
! scope="col" colspan=2 | Displayed Icons | ! scope="col" colspan=2 | Displayed Icons | ||
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=== Turn right === | === Turn right === | ||
This may be manually | This may be set manually by a turn instruction override. | ||
{| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | {| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | ||
! scope="col" colspan=2 | Displayed Icons | ! scope="col" colspan=2 | Displayed Icons | ||
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=== Keep/stay right === | === Keep/stay right === | ||
This may be manually | This may be set manually by the turn instruction override '''Keep right'''. | ||
{| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | {| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | ||
! scope="col" colspan=2 | Displayed Icons | ! scope="col" colspan=2 | Displayed Icons | ||
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=== Exit right === | === Exit right === | ||
This may be manually | This may be set manually by a turn instruction override and is never automatically selected in [[LHT|left hand traffic]] countries. | ||
{| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | {| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | ||
! scope="col" colspan=2 | Displayed Icons | ! scope="col" colspan=2 | Displayed Icons | ||
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=== Turn left === | === Turn left === | ||
This may be manually | This may be set manually by a turn instruction override. | ||
{| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | {| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | ||
! scope="col" colspan=2 | Displayed Icons | ! scope="col" colspan=2 | Displayed Icons | ||
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=== Keep/stay left === | === Keep/stay left === | ||
This may be manually | This may be set manually by the turn instruction override '''Keep left'''. | ||
{| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | {| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | ||
! scope="col" colspan=2 | Displayed Icons | ! scope="col" colspan=2 | Displayed Icons | ||
Line 882: | Line 904: | ||
=== Exit left === | === Exit left === | ||
This may be manually | This may be set manually by a turn instruction override and is never automatically selected in [[RHT|right hand traffic]] countries. | ||
{| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | {| class="Wikitable" style="text-align:center; border: 1px solid darkgray;" cellpadding="5" border="1" | ||
! scope="col" colspan=2 | Displayed Icons | ! scope="col" colspan=2 | Displayed Icons |
Latest revision as of 17:59, 16 September 2021
This is a clickable interactive guide to determine what instruction, if any, will be given at the junction between any 2 segments.
A text version of this information is available here.
Introduction
Understanding how and which instructions are provided requires first understanding a few concepts.
- This page discusses the instruction which will be provided (or not provided) by the Waze server when traveling from one segment, through a junction, and onto a second segment.
- How best continuations work. Any time the destination segment is the best continuation no instruction will be provided by default.
- The lack of an instruction to the best continuation, as well as other default behaviors, can be overridden by the use of turn instruction overrides.
While the illustrations displayed by each question may not represent every possible variation, they do represent the difference between the two options in that question. Please choose the most appropriate answer.
Definitions
- Origin: The segment you are on before going through the junction, in other words the segment you are coming from will be referred to as the origin, and corresponds to s-in in the the algorithm text provided by Waze staff.
- In terms of navigation, the segment you are being routed from is the origin.
- Destination: The segment you will be on after the junction, in other words the segment you are going to will be referred to as the destination, and corresponds to s-out in the the algorithm text provided by Waze staff.
- In terms of navigation, the segment you are being routed on to is the destination.
- Branch: Any segments other than the destination which leave the junction at an angle less than 45.04° will be referred to as other branches, and corresponds to s-N, or s-1,2,3,4... in the the algorithm text provided by Waze staff.
- Overlapping: When the beginning portion two segments are directly on top of each other, meaning they both leave the junction at the exact same angle as each other, they will be referred to as overlapping segments.
- Highway: Any road typed in Waze as a Freeway , Major Highway , or Minor Highway , will be referred to in this page as a highway.
- Turn angle: The turn angle is the angle from the origin to the destination. A perfectly straight road with a junction in the middle would have a turn angle of 0°. The angle then gets wider as you turn to either side. A perfect left or right turn would be 90°. A U-turn at a junction between two segments would represent a 180° turn.
- No-name segments: A segment with no name (the "none" check-box for street name is checked) is considered to have "no-name" as a name for the Best Continuation algorithm. So two segments with no name, will be considered to have identical names, even if they would inherit different names for TTS.
- Roundabout angle: The roundabout angle is the angle of any segment connected to the roundabout from the perspective of the origin. The actual turn angle of the segments is irrelevant.
To explain;- Draw an imaginary line straight through the roundabout to the other side of the roundabout from junction node where the origin joins the roundabout. This will represent a 0° roundabout angle, any deviation to the right or left will increase the angle.
- Draw another imaginary line across the roundabout exactly perpendicular to the first imaginary line. This will represent a 90° roundabout angle to either side.
- For more info see the roundabouts page
Roundabouts | |
---|---|
Normal | Non-Normal |
![]() |
|
All other segments are within the allowed ±15° from either 0° or 90°. | Not all other segments are within the allowed ±15° from either 0° or 90°. |
Directions
To use this interactive flowchart;
- Start with the first question in the interactive algorithm.
- Click on the appropriate answer which best matches your situation. A new question will jump to the top of the screen
- Continue answering the questions until an instruction is displayed at the top of the screen.
- This is the instruction that the Waze server should give when transversing this junction between the two segments you described as the origin and the destination.
![]() |
As of September 2014[update] This algorithm was changed to also factor in alternate names. This algorithm is still correct when none of the segments have alternate names. If there are alternate names on any of the segments there are a few modifications (in bold).
A Cross-match is when the primary name of one segment is identical to the alternate name of an adjacent segment. It had the same priory as a Primary name match.
An Alt match is when two adjacent segments have an identical alternate name (regardless of city name).
![]() |
The interactive algorithm
(31) |
Is voice prompt set to Waze Selected?
YES |
---|
NO: A turn instruction override is set. See the navigation instructions |
---|
(32) |
Is the origin completely inside a junction box?
YES => Junction box routes with turn instruction overrides suppress further instructions inside the junction box. |
---|
NO |
---|
(30) |
Is the turn angle from the origin to the the destination greater than 170°?
YES => Make a U-turn |
---|
NO |
---|
(01) |
Other than the origin and the destination, are there any other segments connected to this junction?
YES |
---|
NO => No instruction |
---|
(19) |
Do the origin and the destination meet at a roundabout?
YES |
---|
NO |
---|
(02) |
Is the turn angle from the origin to the destination between 45.14° and 150°?
YES |
---|
NO, the turn angle is less 45.04° |
---|
NO, the turn angle is greater than 150° |
---|
![]() |
Speculation note: This is unconfirmed Turns with angles greater than 150° will follow the same instruction path as 45.14°-150°, but the Waze routing server will penalize this turn, and avoid routing through it. |
(03) |
Which direction is the turn?
Left => Turn left |
---|
Right => Turn right |
---|
(04) |
Are there any other branches with unrestricted turns from the origin?
YES |
---|
NO => No instruction |
---|
(13) |
Is there more than one (1) other branch?
YES |
---|
NO |
---|
(14) |
Are the two branches (the destination and the other branch) overlapping?
YES => No instruction |
---|
NO |
---|
(05) |
Is the name of the origin and the destination identical?
YES |
---|
NO |
---|
(06) |
Are the origin and the destination the same road type?
YES |
---|
NO |
---|
(07) |
Are both the name AND the road type of any of the other branches identical to the origin?
YES |
---|
NO => No instruction |
---|
(08) |
Is there any other branch to the left of the destination branch?
YES |
---|
NO |
---|
(20) |
Is this an overlapping segment, is it overlapped by any other branch?
YES |
---|
NO |
---|
(25) |
Are the segments in a right hand traffic country (such as the USA)?
YES |
---|
NO => Keep/stay right |
---|
(21) |
Is the origin a highway? ( Freeway , Major Highway , or Minor Highway )
YES |
---|
NO |
---|
(22) |
Is the destination a highway? ( Freeway , Major Highway , or Minor Highway )
YES => Keep/stay left |
---|
NO => Exit left |
---|
(23) |
Is the origin a Ramp ?
YES |
---|
NO => Keep/stay left |
---|
(24) |
Is the destination a highway ( Freeway , Major Highway , or Minor Highway ), or a Ramp ?
YES => Keep/stay left |
---|
NO => Exit left |
---|
(09) |
Is the name of any of the other branches identical to the origin?
YES |
---|
NO => No instruction |
---|
(10) |
Are the origin and the destination the same road type?
YES |
---|
NO |
---|
(11) |
Is the name of any of the other branches identical to the origin?
YES |
---|
NO |
---|
(12) |
Is the road type of any of the other branches identical to the origin?
YES |
---|
NO => No instruction |
---|
(26) |
Are the segments in a left hand traffic country (like the UK)?
YES |
---|
NO => Keep/stay left |
---|
(15) |
Is the origin a highway? ( Freeway , Major Highway , or Minor Highway )
YES |
---|
NO |
---|
(16) |
Is the destination a highway? ( Freeway , Major Highway , or Minor Highway )
YES => Keep/stay right |
---|
NO => Exit right |
---|
(17) |
Is the origin a Ramp ?
YES |
---|
NO => Keep/stay right |
---|
(18) |
Is the destination a highway ( Freeway , Major Highway , or Minor Highway ), or a Ramp ?
YES => Keep/stay right |
---|
NO => Exit right |
---|
(27) |
Are there five (5) or more segments (junctions) connected to the roundabout?
YES => At the roundabout take the #xx exit |
---|
NO |
---|
(28) |
From the perspective of the origin, are the roundabout angles to all the other segments between 0°-15°, or 75°-105°?
YES |
---|
NO => At the roundabout take the #xx exit |
---|
(29) |
What direction is the destination relative to the origin?
Left => At the roundabout turn left |
---|
Straight => At the roundabout continue straight |
---|
Right => At the roundabout turn right |
---|
U Turn, Back => At the roundabout make a U-turn |
---|
No instruction
There will be no instruction given passing through this junction. This can be caused by the best continuation or certain cases with an overlapping segment. It may also be set using the turn instruction override None.
Continue straight
This must be set manually by the turn instruction override Continue and is never automatically selected.
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
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Turn right
This may be set manually by a turn instruction override.
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
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Keep/stay right
This may be set manually by the turn instruction override Keep right.
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
![]() |
Exit right
This may be set manually by a turn instruction override and is never automatically selected in left hand traffic countries.
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
![]() |
Turn left
This may be set manually by a turn instruction override.
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
![]() |
Keep/stay left
This may be set manually by the turn instruction override Keep left.
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
![]() |
Exit left
This may be set manually by a turn instruction override and is never automatically selected in right hand traffic countries.
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
![]() |
At the roundabout take the #xx exit
The "#xx" will be 1st, 2nd, 3rd, etc.. The counting starts from the origin.
Displayed Icons | |||||||
---|---|---|---|---|---|---|---|
Livemap & WME |
Client App | ||||||
![]() |
NOTE: In the client app there will be a digit inside the circle representing which number exit you must take (starting from the origin).
- If the roundabout is not formed correctly (more than one entering/exiting segment connected to same roundabout node), you may get an instruction "at the roundabout, exit number 0" with a partial verbal instruction.
At the roundabout turn left
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
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At the roundabout turn right
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
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At the roundabout continue straight
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
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At the roundabout make a U-turn
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
![]() |
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NOTE: Currently this is only displayed in the client, but there is no verbal instruction (due to a bug).
Make a U-turn
This may be manually set by the turn instruction override U-turn.
Displayed Icons | |
---|---|
Livemap & WME |
Client App |
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