Forums Western Europe United Kingdom How to Edit Turn Restrictions

This topic contains 5 replies, has 3 voice, and was last updated by Stephen Dadda 3 years, 10 months ago
  • Gordon HERE Map Master (Ambassador)

    This may seem a bit complex and not many will know this feature exisits but is quite a simple thing to do

    This example shows how to restrict turns from Church Lane to East Road

    1. Left Click Church Lane with mouse to highlight it.

    2. A Red Diamond will appear on East Road, move mouse onto it and double left click

    3. You will now notice a blue car on Church Lane and Blue arrows on East Road.

    4. If you are NOT allowed to turn Right onto East Road all you need to do is move mouse over the blue arrow and left click once. The Blue Arrow will now turn to a Round White Circle with Red Border.

    5. This action now restricts the car driving up Church Lane to turn Left Only

    6. If your happy with this your finished and can click Save.

    Now here is example of limiting access from East Road onto Church Lane

    1. Left Click East Road with mouse to highlight it.

    2. A Red Diamond will appear on East Road, move mouse onto it and double left click

    3. You will now notice a blue car on East Road and Blue arrows on East Road and also on Church Lane.

    4. If you are NOT allowed to turn Left onto Church Lane from East Road all you need to do is move mouse over the blue arrow and left click once. The Blue Arrow will now turn to a Round White Circle with Red Border.

    5. This action now restricts the car driving along East Road from turning left.

    6. If your happy with this your finished and can click Save.

    The same principle applies to any other road or location that has restrictions. The GPS device will now identify this restriction and change its routing to the follow the correct road to the location required.

    Image examples:
    https://imgur.com/a/is9VH

    Stephen Dadda

    Thank you Virtual. An excellent and easy to follow explanation of how to use Edit Turn Restrictions.

    I have been exploring the feature on Bassett Avenue A33 Southampton as many joining roads have turn restrictions.

    I then looked at Chilworth Roundabout at the top of Bassett Avenue and just North of the roundabout the A27 crosses the M27. Looking at the A27 for turn restrictions there is a white circle with a red circumference rather than the usual red square or diamond where the roads intersect and it is not at the end of a section of the road.
    https://imgur.com/sCHzBtq
    https://imgur.com/OvzDU0p

    From local knowledge of the road layout I assume that the circle indicates an overpass or underpass where one road crosses the other on a bridge and there is no physical junction or meeting of the roads.

    Looking at the M27 where it meets with the same section of the A27 the same junctions or road meetings are shown as a square at the end of that section of road. This would seem to indicate a physical road junction.
    https://imgur.com/aTUtDNQ
    https://imgur.com/QNhrWh3
    https://imgur.com/tnTVDRD
    https://imgur.com/lXdTHc6

    How can HERE system validation allow one road at a meeting of roads to be a square and the other road a circle? I cannot think of a circumstance where this combination could be valid?

    Looks like another area of HERE mapping that needs further investigation and possibly correction. I will report these inconsistencies to HERE as the roads are protected and see what action gets taken.

    Gordon HERE Map Master (Ambassador)

    thanks for the nice comment…
    to be honest what you described is beyond my understanding but think all locked roads cannot be turn restricted edited by us only HERE staff as most locked roads been recorded by the HERE Car so will be accurate, but think best to ask Claire to explain things regarding what you wrote.
    maybe you should just stick to minor roads for time being as less confusing as they are unrestricted..

    Stephen Dadda

    Claire,
    Can you please explain how a road crossing can be shown as ‘overpass’ or ‘underpass’ on one road and ‘intersects with the other road’ on the other road? Is this an issue that HERE are aware of and working to resolve or would you like occurrences reported under ‘Report a map problem’?
    Is there a way in Map Creator of seeing which road is recorded as the ‘underpass’ and which road is the ‘overpass’ ?
    All the examples I have found are on protected roads so cannot be edited in Map Creator and presumably were created by HERE moderators. Most motorway junctions on the M3 between Southampton and Winchester are incorrectly input..
    Thanks

    Claire Robinson – HERE UK and Ireland

    Hi Stephen,
    Apologies for the delayed response – I missed your comment on the post and didn’t receive a notification. Could you please provide some screenshots of these situations on the M3?
    We currently do not have a layer showing ‘bridge/tunnel’ and these are only shown if so, in the link editing/attribute menu to the left.
    We do have many planned improvements for features and additional attributes to edit but currently yes, if you do find situations where currently you are unable to edit them in Map Creator, please do fill in a feedback and it will be moderated that way.
    Thanks a lot!

    Stephen Dadda

    Claire,

    When creating new roads that cross or intersect with another road HERE has 3 options for setting the junction settings:

    At this crossing, the selected road:
    Connects to the other road
    Is an overpass
    Is an underpass

    On grade separated junctions where one road passes over the other road and there is no physical connection I would expect the road crossing to be shown as an overpass or underpass on all roads as shown in screenshots 101, 102 and 103 for Junction 12 of the M3. Will you please confirm that this is the way that grade separated road crossings should appear if the junction has been correctly input.

    Just North of M3 Junction 12 there is another grade separated road crossing where Winchester Road crosses both M3 carriageways and a slip road on a bridge. Screenshots 104, 105, 106 and 107 appear to show that some of the roads intersect with a physical junction rather than being a grade separated junction. Will you please confirm if this grade separated junction has also been correctly input or has been incorrectly input and needs correction.

    Hope this makes some sense but happy to try and clarify if needed,

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