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==Turn lanes==
==Introduction==
The majority of junctions do '''not''' need turn lanes at all. Waze gives advanced warning of upcoming turns, it is up to the user to pick the relevant lane for the approaching turn. Turn lanes should '''only''' be considered if there is a clear issue ''usually'' raised via MPs or URs.
{{mbox | type=notice | text = This forms part of [[United Kingdom#Editing Best Practice|UK Editing Best Practice]]. Please read in conjunction with the USA [[global:USA/Road_types|global page on Road types]], which has more specific information about each Road type and their characteristics.}}


===Do not to map turn lanes...===
{{mbox|type=important|text='''Be aware of the WME language setting!''' This article uses localised names which can be found when using the '''English (UK)''' language.}}
* if the turn lane is '''too short''' (less than 200 ft or 60 m)
==Abbreviations==
* when the turn lane is '''not distinct''', only separated by a single painted line, from the main direction of travel
The following abbreviations should be used where possible to conserve screen space.
* if the turn lane splits '''at or near''' the main junction stop or give way line.
* when the turn lane follows the obtuse angle of the junction
* unless better turn control is needed if a junction is too wide to trigger the [[global:Routing_penalties/Controlling_U-turn_penalties|u-turn prevention]] mechanism
* unless a complex junctions would ''benefit'' from additional instructions.


{| align="center"
{| class="wikitable" style="margin-left: auto; margin-right: auto; border: none;"
|[[File:Uk-no-turn-lane-1.png|200px|thumbnail|Turn lane too short]]
|
|[[File:Uk-no-turn-lane-2.png|200px|thumbnail|Turn lane not distinct]]
{| class="wikitable" style="display: inline-table;"
|[[File:Uk-no-turn-lanes-3.png|200px|thumbnail|Splits at or near stop line]]
! Road name
! Abbreviation
|-
| Avenue
| Ave
|-
| Boulevard
| Blvd
|-
| Broadway
| Bdwy
|-
| Circus
| Cir
|-
| Close
| Cl
|-
| Court
| Ct
|-
| Crescent
| Cr
|-
| Drive
| Dr
|-
| East<sup>1</sup>
| E
|-
| Garden
| Gdn
|-
| Gardens
| Gdns
|-
| Green
| Gn
|-
| Grove
| Gr
|-
| Junction
| J
|}
|}
{| align="center"
{| class="wikitable" style="display: inline-table;"
|[[File:Uk-turn-lane-5.png|200px|thumbnail|Clear separation of turn lane]]
! Road name
|[[File:Uk-turn-lane-4.png|200px|thumbnail|Acute angle of junction]]
! Abbreviation
|[[File:Uk-complex-junction.png|200px|thumbnail|Complex junction]]
|-
| Lane
| Ln
|-
| Mount
| Mt
|-
| North
| N
|-
| Place
| Pl
|-
| Park
| Pk
|-
| Ridge
| Rdg
|-
| Road
| Rd
|-
| Saint
| St.
|-
| South
| S
|-
| Square
| Sq
|-
| Street
| St
|-
| Terrace
| Ter
|-
| Valley
| Val
|-
| West
| W
|}
|}
|}
Notes:
# Roads like "The Avenue", "The Green" etc should not normally be abbreviated.
# TTS = Text To Speech
==Road types==
The following convention should be followed where possible, although it is acknowledged that you may need to deviate from it in some circumstances.
{| class="wikitable unsortable" style="background:white; font-size:80%; margin: 1em auto 1em auto" border="1"
|-
! Waze Road Type
! UK Road Types
|-
| Freeway
| Motorway & Motorway class A roads
|-
| Major Highway
| A-class roads that are classified as Primary Routes
|-
| Minor Highway
| Non-primary A-class roads
|-
| Primary Street
| B-class roads and unclassified roads carrying heavier traffic, often seen on Ordnance survey maps in yellow or orange.
|-
| Street
| Urban Streets, Low traffic rural roads
|-
|Narrow Street
|DO NOT USE  ([https://www.waze.com/forum/viewtopic.php?f=55&t=257807 See UK forum discussion] )
|-
| Private Road
| Road with no access for the general public, or public road with legal prohibition on through routing in both directions (normally "private road" sign, "no motor vehicles except for access" sign, or a closable gate)
|-
| Parking Road
| Roads within a car park, or other places where we don't want Waze to monitor speed and potentially generate a traffic jam report, in particular petrol station forecourts. See [[:uk:Places/Car_Parks|Car Parks page]] for details and advice about not overmapping car parks.
|-
| Dirt Road / 4x4 Trail
| Unsurfaced road, or a ford (water-splash) which is often impassable for normal cars.
|-
|}
For Freeways leave the City Name as "None", so as to stop the City Names smearing.
For Motorway class A roads, name as Axx(M). (No spaces).
Non-drivable - ''Walking Trails'' are a group of non-drivable road types available in the WME found under the Roads menu. However, the user experience can be improved by the correct use of the [[:uk:Footpaths|Footpath]] type.
===Primary Route Network===
The PRN is defined by A roads which connect between Primary Destinations, and have green signs along them. We use the [http://www.ordnancesurvey.co.uk/opendata/viewer/ Ordnance Survey Maps] as our source for this classification, i.e. the roads marked in green colour. The [http://www.waze.com/forum/viewtopic.php?f=55&t=21043 WMEOpenData] extension for Firefox and Chrome can overlay this same data directly within the editor.
===Exceptions===
As with any rule, there will be some exceptions. There are two specific scenarios which are allowed to deviate from the OS map:
* If there's an A road that connects between motorway or PRN networks, then it should also be Major Highway
* If a section of primary road is restricted to some traffic, and there is another primary route nearby, then it can be demoted to Minor Highway
Exceptions shall be discussed on the forum and documented below, and can be locked to a higher rank.
{| class="wikitable sortable" style="background:white; font-size:80%; margin: 1em auto 1em auto" border="1"
|-
! Exception
! Reason
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.28643&lat=51.72331&layers=1925&zoom=3&segments=163428226,163428225,143822319,205752232,205752224,205752225,205752226,205752227,205752228,205752229,205752230,205752231,181508368,181508386,121796330,1217974747 A1080 London Colney Bypass]
| Joins A414 to M25
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=0.53269&lat=51.37885&layers=1477&zoom=5&segments=195065580,121349720,121349777 A2, Chatham]
| The High Street is restricted to buses only. The A2 New Rd to the south is the preferable route.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=0.51927&lat=51.27211&layers=999&zoom=6&segments=147537844,258208028,145281435,258208012,145281463 A20, Maidstone]
| Not PRN - Several bus/taxi only roads adjacent to the A20.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=1.29936&lat=51.13732&layers=2528&zoom=3 A256, Dover]
| The entire A256 road network south of A2 is not PRN. See [http://www.sabre-roads.org.uk/wiki/index.php?title=A256 Sabre] for details.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.31730&lat=51.30045&zoom=4&segments=151641217 A283, Leatherhead]
| Link between A24 PRN and motorway junction.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-1.08944&lat=50.80436&layers=517&zoom=5&segments=121077811,121073655,121076956,121075405,121078199 A3, Portsmouth]
| The main "Out of City" route is signposted North along Hope Street.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.24360&lat=51.46508&layers=1413&zoom=6&segments=121642497,121634609,121634610 B306, Roehampton]
| Turning right from A205 to A306 is only possible via this small loop of B road.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.15352&lat=51.46929&layers=516&zoom=3&segments=121625768,209431243,211047697,211047698,121626845,121630345,121630348,121630362,121638725,180310147,180310146,180322865,180322864 A3216, Battersea]
| Shown as PRN in the OS data, but not signed as a primary route in Streetview imagery.  ''Would benefit from site visit to confirm current status.''
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.69033&lat=52.03288&layers=1797&zoom=2&marker=true A4146/A509 Milton Keynes]
| Joins A5 (PRN) to A421 (PRN) to M1
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.69525&lat=52.45202&layers=1933&zoom=2&segments=255004649 A43, Corby/Kettering]
| New road, compliments the now renamed A4300. Road signs are green, OS zoom7 shows both old and new roads as PRN.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.08845&lat=53.55233&layers=357&zoom=4&segments=122945933,122945942,122945926,148661482,122948056,122948058,122948712,122948710,122945958,122947469,122948977,200821113,200821110,122947471,151918333,122948381 A46, Grimsby]
| Link End of A46 shown by OS as PRN with A16 as Major Highway.  These roads are signed as green.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-2.04062&lat=52.67383&layers=4&zoom=2&marker=true A460, Cannock]
| Newer A460 replaces older A4601
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-2.21586&lat=53.03124&layers=1445&zoom=4 A527, Newcastle Under Lyme]
| This is not part of the PRN anymore since the link road was built to the A500 at the junction of Grange Ln and Church Ln.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-2.28989&lat=53.59545&layers=4087&zoom=5&segments=182125798,193907883,193907884,193906927,193906924,193906923,193908118,193908117,193907633,190400529,185429030,190408901 A56, Bury]
| Joins the PRN between A56 and A58.
|-
| [https://www.waze.com/editor/?env=row&lon=-2.49294&lat=53.52383&layers=4071&zoom=6&segments=123434240,123434232,123434238,123434246,253701794,253700686,253701791,253701793,253701790,123430401,231620540,123435169,123434203,123438182,123438181,197647237,197647236,197647233 A577, Atherton]
| Eastern and southern section passes through a pedestrianised zone. Bag Ln at the western end is signposted as PRN and needed to complete the route eastbound and westbound.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-2.30370&lat=53.59403&layers=4087&zoom=6&segments=185360291,185360292,193828317,185353645 A58, Bury]
| Joins the PRN turning right from A58 to A56.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-1.20739&lat=52.77179&layers=2023&zoom=5&segments=122662087,122663189,122661798,122662095,122662188,249963055,249963056,122664053,246768325,246242310,249763741,249763714,122663256,122662192 A6, Loughborough]
| The central area of Loughborough has been pedestrianised and the A6 has been diverted along an upgraded relief road.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.95910&lat=52.96680&layers=485&zoom=4 A6097, Newton (Notts)]
| The spur of the A6097 is not shown as PRN but roads are green on signs, the link roads going to/from A46 (S) Ramps have also been set as major highway to ensure a continuous route (these were formerly the A46).  Note: The Aerials and Street-view here are significantly out of date following the upgrading of the A46 to Dual carriageway, the current layout was checked with a physical site survey.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.85782&lat=53.74229&layers=677&zoom=3&segments=188590706,122968607,188590707,122968713,165102444,165102443,165102437,122968663,122969112,137346838,122969113,143395496 A614, Howden]
| OS Map doesn't connect the primary route to the motorway, leaving a gap that could affect routing.
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-0.85782&lat=53.74229&layers=677&zoom=3&segments=188590706,122968607,188590707,122968713,165102444,165102443,165102437,122968663,122969112,137346838,122969113,143395496 A617, Mansfield]
| A617 is shown as Primary in some sources, and does have green signs
|-
| [https://www.waze.com/en-GB/editor/?env=row&lon=-2.22223&lat=53.49541&layers=1280&zoom=3&segments=123308871,123308962,123309707,123310274,123310277,123310282,123310287,123310324,123310331,123322330,123322697,123322698,147724993,147724994,147724995,242320160,242320161,262050406,262050407,265468821,123310323,123321019,123308877,123309718,123309719,123309334,123308549,261167747,261167753,261167748,261167811,148981188 A664, Manchester]
| Streetview of Rochdale Rd shows it has white signs, so it is not PRN.
|-
| [https://www.waze.com/editor/?env=row&lon=-2.23778&lat=53.48840&layers=388&zoom=5&segments=242320159,242320158,177396508,254006220,254006221,177396094,242320157,242320402,242320162,181459929,253811568&marker=true A665, Manchester]
| Recent roadworks have made A665 - Miller St one way, so it makes sense to promote the other way.
|}
==Dual Carriageways==
The following convention should be followed where possible, although it is acknowledged that you may need to deviate from it in some circumstances.
===When to Split===
A road should be split into be 2 one-way roads if any of the following conditions are met:
# The central reservation is > 5m
# There's a visible gap between average of all GPS traces
# It is split by physical barrier (Concrete, Armco, pedestrian barrier etc)
Pedestrian refuges and painted road separation (cross hatching that can be driven over) should not normally be split.  Be aware there are a lot of these that were created as split roads during the UK Base-map import, these usually need merging to be a single two-way road.
===Naming Convention===
Whenever possible, on split roads, name carriageways with the direction of travel.  Insert the direction of travel at the end of the road name:
Examples:
1. M1 (N)
2. A4 (W)
3. M25 (ACW)
4. A57(M) (W)
This makes traffic and incident reports much more useful and helps with navigation.
==Ramps (to/from Motorways and Dual Carriageways)==
===Where should I start the sliproad?===
For best navigation and routing advice, sliproads leading:
''off'' a Motorway or Dual Carriageway should be placed to start where
* The lane begins to divide (in the case of 3/2/1 markers)
* There is a gantry over the carriageway, where the 1 mile, 1/2 mile etc finishes. This will usually be the last gantry before the actual junction and will be the one without a distance marker on it
''on'' to a Motorway or Dual Carriageway should be placed where
* the road first joins the adjoining road, i.e. just after the chevrons/lane dividers
===Ramp naming===
Ramp names to be short, useful and unambiguous. Names should '''not''' include ''Junction to'' nor ''Entry to''. Cardinal directions (N, S, E, W) should only be included if they are included on signs and provide clarity. Like other abbreviations, the <big>'''&gt;'''</big> character can be used, and is read out as ''towards'', this should be used only if needed. Entry and Exit should be considered equal for the purposes of naming, and should be named to give the most useful instruction to the driver. Ramps should '''not''' have a ''City'' name, this helps prevent city smudge.
====Junctions with numbers====
* All segments from numbered junctions should be mapped as '''Ramps''' to ensure ''exit'' instructions are given
* The name should begin with the exit number and then the name of the road it leads to, ideally '''without''' cardinal directions
* When motorways split, short ''wayfinder'' ramps should be used so that these names don't appear in the App
* Do '''not''' include junction numbers on entry ramps.
::; '''Format:''' : <big><code>J''[number]'' to ''[simple road name]''</code></big>
::; '''Example:''' :  <big><code>J4 to A464</code></big>
====Junctions without numbers====
* If a ramp connects directly to '''exactly 1''' other road, then it can be left ''unnamed'', the instructions will naturally take on the name of the next segment
* It '''may''' be desirable to name the ramps more simply to remove cardinals or road names
* If the ramp connects to a roundabout, then an ''unnamed'' segment will often give optimal instructions. If the routes away form the roundabout are not signed from the main road the ramp should be named to match the exit signs.
::; '''Format:''' : <big><code>''[simple road name]''</code></big>
::; '''Example:''' : <big><code>A1</code></big> rather than <big><code>A1(M) (N)</code></big> or <big><code>A1 - Great North Road</code></big>
====Disambiguation====
* Where a ramp forks into two directions, then the ramp names should include cardinals (if signed) or ''towards a city'' based on the signage
* If a city name is used '''only one city''' from the directional sign is to be used, preferably the one which is listed first
: ''On the M25, where relevant, directions to Heathrow or Gatwick should take precedence''
* If the section of ramp before a fork is particularly short, then the preceding segment can be left ''unnamed'' with any junction number written in the forked segments
: ''This does result in longer announcements, so should be avoided if possible''
* Where both directions of a road are connected to a roundabout, then ramps can be disambiguated using ''> city'' instead of cardinals, as per the signage.
::; '''Format:''' : <big><code>''[simple road name]'' (''[cardinal direction]'')</code>
::: <code>''[simple road name]'' > ''[city name]''</code></big>
::: <big><code>Junction > ''[city name]''</code></big> if connecting road has no name / number
::; '''Example:''' : <big><code>A1 (N)</code></big> & <big><code>A1 (S)</code></big>
::: <big><code>M62 > Manchester</code></big> & <big><code>M62 > Hull</code></big>
==Junction Naming==
Major junctions, particularly on motorways, should be labelled with a landmark.
Under no circumstances should the road name or city name fields of a segment be used for naming of a junction.
==Road Name & Number==
Where a road exhibits both a road number and name the following convention should be used:
<Number> - <Name>
Examples:
1. A7 - Old Dalkeith Rd
2. A1 - Edinburgh Rd
This gives both a consistent appearance and allows a straightforward transfer if/when Waze UK moves to the official Department for Transport designations.
The same can also be said for adding the direction of travel on single/dual carriageways with an A-road designation in the form
<Number> (Direction) - <Name>
Examples:
1. A2 (W) - Dover Rd
2. A229 (N) - Cuxton Rd
==Roundabouts==
Roundabout segments should typically remain '''unnamed'''. If the roundabout does have a proper, signposted name, then this can be labelled using a landmark of "Junction/Intersection" type that fills the centre of the roundabout. This only applies to big roundabouts that are larger than 30 metres.
''For further advice on editing roundabouts, see [[Junctions and Roundabouts|Editing Junctions and Roundabouts]]''
==Lay-bys==
* Lay-bys should only be included where there is significant separation from the main road (e.g. grass, trees or a physical barrier) in a similar way to deciding if a road is dual carriageway.
* Routes in and out should be mapped with roads of "Parking Lot Road" type, with appropriate directions and turns.
* The Lay-by road should have no city name and the road name set to "[P]".
* A Landmark is not required for lay-bys.
'''Lay-by Examples:'''
This example shows significant separation between the road and Lay-by:
[[Image:Good_Layby_1.jpg]]
This example is only separated by the distance between the (N) and (S) carriageways which is the minimum that you should map.  Note that the "parking lot road" is mapped over the area that vehicles park on to improve separation:
[[Image:Good_Layby_2.jpg]]
This example does not have enough separation for the Lay-by to be mapped:
[[Image:Bad_Layby_1.jpg]]
(Note: this example is zoomed in closer that the previous two!)
==Bypass or By-pass?==
Bypass.
==Railways==
Railway lines should be drawn in as '''Railroad''' type roads, particularly if there are other streets nearby. They appear in the client, and they keep Wazers on trains from polluting the local speed data.
Tracks should be drawn ''as simply as possible'' - they do not need to be accurate out in the country where no one can see them, and it is not necessary to map individual tracks through a station.
'''Segment Properties''':
* '''City:''' No City
* '''Name:''' No Name
* '''Type:''' Railroad
* '''Direction:''' Two way
* '''Level:''' Ground, unless actually going under or over over another road
* '''Lock:''' 3
Railroad segments '''can''' be connected to the road network at level crossings, without any risk of Waze routing drivers onto the tracks. The extra granularity of segments at the crossing provides more accurate routing information. All turns should be enabled (no red arrows please).
'''Check that:'''
* "old" roads, with addresses along them, are broken by segment nodes each side of a railway bridge. This enables Waze to navigate to addresses adjacent to the bridge when Network Rail close the road for engineering works.
* "new" roads, with no addresses along them, are not broken at railway bridges, since such roads are always closed junction to junction, and intermediate nodes are a nuisance (sometimes necessary for speed limit changes, but not for bridges).
Railways which are underground (i.e. through tunnels) must not be mapped.
''For more detailed information on railways, please see the [[global:Road_types/USA#Railroad|Road_types/USA#Railroad]] but be aware that the guidelines written above take precedence.''
'''Note:''' it is often necessary to split railways lines at county boundaries to avoid smudging the county name into the wrong area.
----
&laquo; ''Back to [[United Kingdom#Editing Best Practice|UK Editing Best Practice]]''


If turn lanes really are '''of benefit''' to the driver, then they should be mapped in the following way:
[[Category:United Kingdom]]
*Do '''not''' map the turn lane longer than it is in reality, Waze already has mechanisms for dealing with queuing traffic
*Turn lanes must '''never''' cross a side road before a junction, they '''must''' start between the side road and main junction to give clear instructions
*The turn lane segments should have '''no name''', so that the instructions read out the name of the next street
*The ''Road Type'' should match the type of the roads they lead to (and '''never''' ramps). Only the main carriageway stays as the higher ''Road Type''
*The angle at the beginning of the turn lane should be shallow (less than 45 degrees), so that Waze instructs ''Keep Left / Right'' at the split point
*The end of the turn lane should have a clear '''turn''' instruction if there is a stop line (traffic lights) or if the angle of the turn is less than 135 degrees. If the traffic merges onto the new road with right-of-way no secondary instruction is needed.

Revision as of 14:08, 6 February 2019

Introduction

This forms part of UK Editing Best Practice. Please read in conjunction with the USA global page on Road types, which has more specific information about each Road type and their characteristics.
Be aware of the WME language setting! This article uses localised names which can be found when using the English (UK) language.

Abbreviations

The following abbreviations should be used where possible to conserve screen space.

Road name Abbreviation
Avenue Ave
Boulevard Blvd
Broadway Bdwy
Circus Cir
Close Cl
Court Ct
Crescent Cr
Drive Dr
East1 E
Garden Gdn
Gardens Gdns
Green Gn
Grove Gr
Junction J
Road name Abbreviation
Lane Ln
Mount Mt
North N
Place Pl
Park Pk
Ridge Rdg
Road Rd
Saint St.
South S
Square Sq
Street St
Terrace Ter
Valley Val
West W

Notes:

  1. Roads like "The Avenue", "The Green" etc should not normally be abbreviated.
  2. TTS = Text To Speech

Road types

The following convention should be followed where possible, although it is acknowledged that you may need to deviate from it in some circumstances.

Waze Road Type UK Road Types
Freeway Motorway & Motorway class A roads
Major Highway A-class roads that are classified as Primary Routes
Minor Highway Non-primary A-class roads
Primary Street B-class roads and unclassified roads carrying heavier traffic, often seen on Ordnance survey maps in yellow or orange.
Street Urban Streets, Low traffic rural roads
Narrow Street DO NOT USE (See UK forum discussion )
Private Road Road with no access for the general public, or public road with legal prohibition on through routing in both directions (normally "private road" sign, "no motor vehicles except for access" sign, or a closable gate)
Parking Road Roads within a car park, or other places where we don't want Waze to monitor speed and potentially generate a traffic jam report, in particular petrol station forecourts. See Car Parks page for details and advice about not overmapping car parks.
Dirt Road / 4x4 Trail Unsurfaced road, or a ford (water-splash) which is often impassable for normal cars.

For Freeways leave the City Name as "None", so as to stop the City Names smearing. For Motorway class A roads, name as Axx(M). (No spaces).

Non-drivable - Walking Trails are a group of non-drivable road types available in the WME found under the Roads menu. However, the user experience can be improved by the correct use of the Footpath type.

Primary Route Network

The PRN is defined by A roads which connect between Primary Destinations, and have green signs along them. We use the Ordnance Survey Maps as our source for this classification, i.e. the roads marked in green colour. The WMEOpenData extension for Firefox and Chrome can overlay this same data directly within the editor.

Exceptions

As with any rule, there will be some exceptions. There are two specific scenarios which are allowed to deviate from the OS map:

  • If there's an A road that connects between motorway or PRN networks, then it should also be Major Highway
  • If a section of primary road is restricted to some traffic, and there is another primary route nearby, then it can be demoted to Minor Highway

Exceptions shall be discussed on the forum and documented below, and can be locked to a higher rank.

Exception Reason
A1080 London Colney Bypass Joins A414 to M25
A2, Chatham The High Street is restricted to buses only. The A2 New Rd to the south is the preferable route.
A20, Maidstone Not PRN - Several bus/taxi only roads adjacent to the A20.
A256, Dover The entire A256 road network south of A2 is not PRN. See Sabre for details.
A283, Leatherhead Link between A24 PRN and motorway junction.
A3, Portsmouth The main "Out of City" route is signposted North along Hope Street.
B306, Roehampton Turning right from A205 to A306 is only possible via this small loop of B road.
A3216, Battersea Shown as PRN in the OS data, but not signed as a primary route in Streetview imagery. Would benefit from site visit to confirm current status.
A4146/A509 Milton Keynes Joins A5 (PRN) to A421 (PRN) to M1
A43, Corby/Kettering New road, compliments the now renamed A4300. Road signs are green, OS zoom7 shows both old and new roads as PRN.
A46, Grimsby Link End of A46 shown by OS as PRN with A16 as Major Highway. These roads are signed as green.
A460, Cannock Newer A460 replaces older A4601
A527, Newcastle Under Lyme This is not part of the PRN anymore since the link road was built to the A500 at the junction of Grange Ln and Church Ln.
A56, Bury Joins the PRN between A56 and A58.
A577, Atherton Eastern and southern section passes through a pedestrianised zone. Bag Ln at the western end is signposted as PRN and needed to complete the route eastbound and westbound.
A58, Bury Joins the PRN turning right from A58 to A56.
A6, Loughborough The central area of Loughborough has been pedestrianised and the A6 has been diverted along an upgraded relief road.
A6097, Newton (Notts) The spur of the A6097 is not shown as PRN but roads are green on signs, the link roads going to/from A46 (S) Ramps have also been set as major highway to ensure a continuous route (these were formerly the A46). Note: The Aerials and Street-view here are significantly out of date following the upgrading of the A46 to Dual carriageway, the current layout was checked with a physical site survey.
A614, Howden OS Map doesn't connect the primary route to the motorway, leaving a gap that could affect routing.
A617, Mansfield A617 is shown as Primary in some sources, and does have green signs
A664, Manchester Streetview of Rochdale Rd shows it has white signs, so it is not PRN.
A665, Manchester Recent roadworks have made A665 - Miller St one way, so it makes sense to promote the other way.

Dual Carriageways

The following convention should be followed where possible, although it is acknowledged that you may need to deviate from it in some circumstances.

When to Split

A road should be split into be 2 one-way roads if any of the following conditions are met:

  1. The central reservation is > 5m
  2. There's a visible gap between average of all GPS traces
  3. It is split by physical barrier (Concrete, Armco, pedestrian barrier etc)


Pedestrian refuges and painted road separation (cross hatching that can be driven over) should not normally be split. Be aware there are a lot of these that were created as split roads during the UK Base-map import, these usually need merging to be a single two-way road.

Naming Convention

Whenever possible, on split roads, name carriageways with the direction of travel. Insert the direction of travel at the end of the road name:

Examples:
1. M1 (N)
2. A4 (W)
3. M25 (ACW)
4. A57(M) (W)

This makes traffic and incident reports much more useful and helps with navigation.

Ramps (to/from Motorways and Dual Carriageways)

Where should I start the sliproad?

For best navigation and routing advice, sliproads leading:

off a Motorway or Dual Carriageway should be placed to start where

  • The lane begins to divide (in the case of 3/2/1 markers)
  • There is a gantry over the carriageway, where the 1 mile, 1/2 mile etc finishes. This will usually be the last gantry before the actual junction and will be the one without a distance marker on it

on to a Motorway or Dual Carriageway should be placed where

  • the road first joins the adjoining road, i.e. just after the chevrons/lane dividers


Ramp naming

Ramp names to be short, useful and unambiguous. Names should not include Junction to nor Entry to. Cardinal directions (N, S, E, W) should only be included if they are included on signs and provide clarity. Like other abbreviations, the > character can be used, and is read out as towards, this should be used only if needed. Entry and Exit should be considered equal for the purposes of naming, and should be named to give the most useful instruction to the driver. Ramps should not have a City name, this helps prevent city smudge.

Junctions with numbers

  • All segments from numbered junctions should be mapped as Ramps to ensure exit instructions are given
  • The name should begin with the exit number and then the name of the road it leads to, ideally without cardinal directions
  • When motorways split, short wayfinder ramps should be used so that these names don't appear in the App
  • Do not include junction numbers on entry ramps.
Format:
J[number] to [simple road name]
Example:
J4 to A464

Junctions without numbers

  • If a ramp connects directly to exactly 1 other road, then it can be left unnamed, the instructions will naturally take on the name of the next segment
  • It may be desirable to name the ramps more simply to remove cardinals or road names
  • If the ramp connects to a roundabout, then an unnamed segment will often give optimal instructions. If the routes away form the roundabout are not signed from the main road the ramp should be named to match the exit signs.
Format:
[simple road name]
Example:
A1 rather than A1(M) (N) or A1 - Great North Road

Disambiguation

  • Where a ramp forks into two directions, then the ramp names should include cardinals (if signed) or towards a city based on the signage
  • If a city name is used only one city from the directional sign is to be used, preferably the one which is listed first
On the M25, where relevant, directions to Heathrow or Gatwick should take precedence
  • If the section of ramp before a fork is particularly short, then the preceding segment can be left unnamed with any junction number written in the forked segments
This does result in longer announcements, so should be avoided if possible
  • Where both directions of a road are connected to a roundabout, then ramps can be disambiguated using > city instead of cardinals, as per the signage.
Format:
[simple road name] ([cardinal direction])
[simple road name] > [city name]
Junction > [city name] if connecting road has no name / number
Example:
A1 (N) & A1 (S)
M62 > Manchester & M62 > Hull

Junction Naming

Major junctions, particularly on motorways, should be labelled with a landmark.

Under no circumstances should the road name or city name fields of a segment be used for naming of a junction.

Road Name & Number

Where a road exhibits both a road number and name the following convention should be used:

<Number> - <Name>

Examples:
1. A7 - Old Dalkeith Rd
2. A1 - Edinburgh Rd

This gives both a consistent appearance and allows a straightforward transfer if/when Waze UK moves to the official Department for Transport designations.

The same can also be said for adding the direction of travel on single/dual carriageways with an A-road designation in the form

<Number> (Direction) - <Name>

Examples:
1. A2 (W) - Dover Rd
2. A229 (N) - Cuxton Rd

Roundabouts

Roundabout segments should typically remain unnamed. If the roundabout does have a proper, signposted name, then this can be labelled using a landmark of "Junction/Intersection" type that fills the centre of the roundabout. This only applies to big roundabouts that are larger than 30 metres.

For further advice on editing roundabouts, see Editing Junctions and Roundabouts

Lay-bys

  • Lay-bys should only be included where there is significant separation from the main road (e.g. grass, trees or a physical barrier) in a similar way to deciding if a road is dual carriageway.
  • Routes in and out should be mapped with roads of "Parking Lot Road" type, with appropriate directions and turns.
  • The Lay-by road should have no city name and the road name set to "[P]".
  • A Landmark is not required for lay-bys.


Lay-by Examples:

This example shows significant separation between the road and Lay-by:


This example is only separated by the distance between the (N) and (S) carriageways which is the minimum that you should map. Note that the "parking lot road" is mapped over the area that vehicles park on to improve separation:


This example does not have enough separation for the Lay-by to be mapped:

(Note: this example is zoomed in closer that the previous two!)

Bypass or By-pass?

Bypass.

Railways

Railway lines should be drawn in as Railroad type roads, particularly if there are other streets nearby. They appear in the client, and they keep Wazers on trains from polluting the local speed data.

Tracks should be drawn as simply as possible - they do not need to be accurate out in the country where no one can see them, and it is not necessary to map individual tracks through a station.

Segment Properties:

  • City: No City
  • Name: No Name
  • Type: Railroad
  • Direction: Two way
  • Level: Ground, unless actually going under or over over another road
  • Lock: 3

Railroad segments can be connected to the road network at level crossings, without any risk of Waze routing drivers onto the tracks. The extra granularity of segments at the crossing provides more accurate routing information. All turns should be enabled (no red arrows please).

Check that:

  • "old" roads, with addresses along them, are broken by segment nodes each side of a railway bridge. This enables Waze to navigate to addresses adjacent to the bridge when Network Rail close the road for engineering works.
  • "new" roads, with no addresses along them, are not broken at railway bridges, since such roads are always closed junction to junction, and intermediate nodes are a nuisance (sometimes necessary for speed limit changes, but not for bridges).

Railways which are underground (i.e. through tunnels) must not be mapped.

For more detailed information on railways, please see the Road_types/USA#Railroad but be aware that the guidelines written above take precedence.

Note: it is often necessary to split railways lines at county boundaries to avoid smudging the county name into the wrong area.


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