kiranahiretomtom
commented
9 months ago The 'Sources for editing' section updated with the below information-
- Removed Maxar Premium Imagery from the list as it's not available anymore in OSM
- Added a description of proprietary sources to support editing
Project description
Goal
To improve the map quality in Finland, we propose to make data improvements by sharing challenges, and when appropriate, fixing data errors, and adding or editing certain kinds of geometry.
How to participate
Anyone is welcome to contribute to this project by participating in our MapRoulette challenges. Here is the extended documentation for using MapRoulette. Note that sometimes additional instructions are provided within the challenges.
Here is the current set of challenges.
Challenges
Quality check challenges
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- [Not connected highway](https://maproulette.org/browse/challenges/27574) Ways with tag highway=* must be connected to the rest of the road network to ensure its continuity, e.g. for route planning. When such a way is not connected to another way with tag highway=*, an error is logged. - [Polygon has self-intersection](https://maproulette.org/browse/challenges/27575) The necessary edits will be made to fix cases where the tag on a way indicates that the object is a polygon feature, but the way does not meet the definition of a closed way because it is self-intersecting, or ways in a relation with the same role form a self-intersecting polygon - [This multipolygon is a simple polygon](https://maproulette.org/browse/challenges/27576) Simple areas are mapped in OSM by creating a closed way and tagging it as an area object rather than a line. Relations of the type multipolygon are used to represent complex areas with holes inside or consisting of multiple disjoint areas. A multipolygon relation can have any number of ways in the role outer (the outline) and any number of ways in the role inner (the holes), and these must form valid rings to build a multipolygon. When a relation of the type multipolygon consists of only one member, which is a simple area, an error is logged. - [Tag area=yes on object without feature type](https://maproulette.org/browse/challenges/27579) The area=yes tag is required for some closed ways when used to define a polygon. For closed ways with other tags, there is an assumption that the way defines an area. In some circumstances, a closed way may define both a closed polyline and an area. When tag area=yes is used, it is expected that one of the necessary accompanying tags is also found. - [Spiky buildings](https://maproulette.org/browse/challenges/27580) Buildings with extremely sharp angles will be identified and corrected if needed. - [Invalid Turn Restriction](https://maproulette.org/browse/challenges/27585) This check identifies invalid turn restrictions. Invalid turn restrictions occur in a variety of ways, from invalid members to edge geometry issues to not being routable to wrong topology. Relations, ways and nodes in relations as well as turn restrictions are checked. A relation needs to have exactly one way with role 'from' and exactly one way with role 'to'. These ways should be linked together by at least one way with role 'via' OR with exactly one node with role 'via' (no more and no less). - [Polygon is not closed](https://maproulette.org/browse/challenges/27592) Features intended to be a polygon should be correctly tagged. When the tag indicates that the object should be a polygon, but the geometry is built out of a NON-closed way, an error is logged. - [Impossible angle in a highway](https://maproulette.org/browse/challenges/27593) In general, roads intended for vehicles should be built to maintain proper angles which ensure maneuvers and fluent traffic. Extreme, too sharp angles applied to a way may indicate errors in the road geometry.Isolated Highways challenges
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-https://maproulette.org/browse/challenges/39340 Leads are generated based on analysis of highway classifications and their connection to the rest of the road network, you can Identify and connect if needed cases where the end of the way with tag highway=* is not connected to the rest of the road network.Road Geometry, building, Water bodies
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- [Finland - Add Highways](https://maproulette.org/browse/challenges/39746) We spatially compared TomTom's in-house road centerlines with the OSM road network and identified missing way locations. the goal is to Identify and add if needed, one or more missing ways. - [Finland - Fix Building and Highway Intersections](https://maproulette.org/browse/challenges/40251) we discovered instances where buildings might be intersecting with a highway/road. The goal of this challenge is to identify and rectify any such situations, ensuring accurate map and data representation by utilizing reliable sources. It’s important to note that, as with any spatial analysis, there might be some false positives. If you come across a task that you believe is not a valid issue based on your knowledge, we kindly request you to mark it as “Not an issue.” - [Finland - Fix Incorrect Highway Junctions](https://maproulette.org/browse/challenges/42291) the objective of this challenge is to Identify and fix if needed, cases where highway junctions are incorrectly or imprecisely mapped. We improve overall OpenStreetMap (OSM) route network quality by solving real errors in the data. We found leads based on spatial analysis of OSM data. We excluded pedestrian paths and cycleways along and applied a distance buffer to generate a set of incorrect situations for junctions, that you will find in this challenge. Why is it important? to ensure that highway junctions are connected within OSM is crucial for optimised routing. When road elements are disconnected or imprecisely mapped, it can degrade the navigation experience for routing applications that rely on OSM data, leading to inefficient directions, delays, and potential navigation errors. - [Finland - Fix Incorrect Junctions on Roundabouts](https://maproulette.org/browse/challenges/42292) We’ve developed new checks aimed at identifying and correcting cases where two or more highways are connected to the same node on a roundabout. According to the [[OSM wiki documentation](https://wiki.openstreetmap.org/wiki/Tag:junction%3Droundabout#:~:text=of%20that%20routes.-,Connecting%20ways,-Connect%20the%20approaching)](https://wiki.openstreetmap.org/wiki/Tag:junction%3Droundabout#:~:text=of%20that%20routes.-,Connecting%20ways,-Connect%20the%20approaching), highways entering and exiting a roundabout should never connect to the same node on that roundabout. Why is this important? Fixing such situations will enable routing applications that rely on OSM data to correctly recognize the situation, providing improved guidance when entering or exiting a roundabout. The Leads were detected based on a query of OSM data. We compared the number of highways entering and exiting a roundabout to find situations with a high number of highways or a low number of highways that are part of junction=roundabout or junction=circular. We excluded pedestrian paths, cycleways and roads that are located on different levels (bridges, tunnels). - [Finland - Fix Spiky Buildings](https://maproulette.org/browse/challenges/45140) This collaborative effort requires a review and possible geometry correction, as the challenge identifies buildings with potential issues due to their unusual shape. It is aimed at improving data quality, accuracy, and aesthetics of OpenStreetMap, making it a more valuable resource for a wide range of users and applications. - [Finland - Advanced Map Editing: Validate and Fix Water Objects](https://maproulette.org/browse/challenges/48697) Aims to improve OpenStreetMap (OSM) data by identifying and correcting issues with inland water bodies like rivers.Tags challenges
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- [Finland - Update deprecated landuse=reservoir tags in Pirkanmaa](https://maproulette.org/admin/project/48342/challenge/43320) This particular challenge helps you update the deprecated tag landuse=reservoir on water reservoirs in Portugal. The OSM wiki recommends that this tag be replaced by natural=water + water=reservoir. You will find detailed guidelines for how to do this in the left-hand instruction panel of each task. While editing the water bodies in this challenge, you may further improve them by correcting their outline if needed, or remove them if they no longer exist. - [Finland - Fix deprecated highway road in Pirkanmaa](https://maproulette.org/admin/project/48342/challenge/43366) Each task in this challenge will point you to a road in Finland tagged with highway=road. This tag is used when the kind of road is unknown. If you can reliably verify the type of road, give it a more descriptive highway tag. To do so, follow the detailed guidelines in the left-hand instruction panel of the tasks. While editing the roads in this challenge, you may further improve them by correcting their course or tagging. -[Finland - Fix objects without tags](https://maproulette.org/browse/challenges/43903) This collaborative mapping project, introduced by TomTom, aims to improve the OpenStreetMap data by validating and fixing objects without tags. It is proper tagging that represents good editing practice, while objects without tags are undesirable in OpenStreetMap and should be either fixed by adding missing attributes or removed in case of duplicated or not existing objectsEdits based on map feedback
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We make improvements to OSM based on user feedback submitted for the TomTom map after comparing and ensuring that it is also valid for OSM. Here is a list of the types of edits to be made, provided they do not conflict with others’ edits and a local source is available: - Highways - Adding or correcting highways - Adding or correcting link roads - Adding or adjusting bridges, tunnels, layers, or relations - Adding or updating lanes and related properties - Adding or updating traffic signs - Adding or updating access barriers - Adding or updating turn restrictions - Addresses - Adding or correcting addresses - Updating the position of address nodes, usually when an object has multiple addresses - Adding or correcting names of ways - POIs (Points of Interest) - Adding POIs - Correcting POI locations - Adding or correcting POI information - Resolving POI-land use discrepancies - Handling POI closures - Land use - Adding land use - Modifying existing land use extent - Buildings - Adding buildings - Updating building type - Adjusting building shape - Water - Adding or realigning rivers, streams, and lakes. - Railways - Adding railway tracks - Realigning railway tracks - Adding or adjusting railway infrastructure tags such as bridges, tunnels, level crossings - Ferry lines - Adding ferry lines - Realigning ferry lines - Adding ferry terminals These are incidental edits spread over time starting July 17th, 2023. We follow local guidelines and, if needed, consult with the community before making an update.Geographical scope
Data improvements will be made across the whole country.
Announcements
TomTom organised editing
We will follow the Organised Editing Guidelines for this project. TomTom will not make any edits until two weeks after the project announcement. Here is our Organised Editing page, including a list of our editors.
How to find TomTom's edits
All edits made by our team have the hashtag #tt or #tomtom.
Sources for editing
For some OSM map edits TomTom editors will use proprietary sources for support. These will typically be in situations where there is not sufficient evidence using the available sources in OSM editors themselves. The proprietary sources will be ground-level imagery and GPS traces, both collected by TomTom's mobile mapping vans. On occasion, we will also use sources collected from a field survey by one of TomTom's sourcing specialists who have visited the location and collected data to support the required map updates.
How to reach out
If you have remarks about a specific edit of ours, please drop a comment in the changeset, and we will do our best to respond thoughtfully. Or, you can also: