Telenav/Mapping Projects/Europe/Frankfurt&Russelsheim
Description
To make OpenStreetMap more navigable and accurate in guidance, our mapping team is planning to start an editing project in Europe. At the end of April 2020, our team will start editing in Frankfurt & Russelsheim. We will focus on editing one ways, turn restrictions, road geometry and also validating the existing map by correcting keep right errors.
V・T・E Frankfurt am Main, Hessen  |
| latitude: 50.115, longitude: 8.68 |
| Browse map of Frankfurt am Main 50°06′54.00″ N, 8°40′48.00″ E |
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External links:
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| Use this template for your locality |
Frankfurt am Main is a city in Hessen at latitude 50°06′54.00″ North, longitude 8°40′48.00″ East.
How to map
We will follow the mapping scheme that is already used in Germany, as it is described here: map features and German style
Overall statistics
| City | Road geometry(km) | Road name(km) | Oneway(km) | Speed limit | Lane info(km) | Turn restrictions | Signposts |
|---|---|---|---|---|---|---|---|
| Frankfurt am Main | 3514.63 | 2059.75 | 1085.10 | 1593.01 | 794.80 | 1313 | 154 |
| Rüsselsheim am Main | 779.87 | 417.66 | 102.11 | 207.61 | 100.45 | 256 | 28 |
For this statistics highway is considered: motorway, motorway_link, trunk, trunk_link, primary, primary_link, secondary, secondary_link, tertiary, tertiary_link, residential, service.
For this statistisc we have used the dump from 17.03.2020
Improve OSM
One way
We will focus on adding missing one ways as well as on improving the existing data We will add oneway=yes tag after checking the direction of the road using street level imagery as OSC and Mappilary, aerial imagery as Bing, Esri, and Improve OSM traffic flow direction, etc. See also: oneway.
| City | Oneway cases |
|---|---|
| Frankfurt am Main | 105 |
| Rüsselsheim am Main | 14 |
Used dump
Turn restrictions
We will focus on adding new turn restrictions and to improve the existing data.
We will use the tags:
• relations: type=restriction ; restriction= * ; except= *
• relations: type=restriction ; restriction:conditional= * ; except= *
• members: from, via, to
See also: https://github.com/TelenavMapping/Telenav_mapping_team_practices_and_workflow/wiki/Turn-Restrictions-Best-Practices
| City | TR cases |
|---|---|
| Frankfurt am Main | 766 |
| Rüsselsheim am Main | 81 |
Used dump
Road geometry
We will focus on adding missing roads and to improve the existing data. We will use the following tags: see highway
Quality Assurance
We will improve the existing data using Integrity Check and Keep Right tools.
for IC see: Integrity_Checks
for KR see: Keep Right
Statistics for IC Frankfurt
| Severity | Error name | Cases |
|---|---|---|
| critical | bad-2w-4w-tags | 67 |
| critical | invalid-turn-restrictions | 6 |
| critical | oneway-flip-flops | 5 |
| critical | pierced-tunnels-and-bridges | 12 |
| critical | road-islands | 38 |
| critical | unconnected-ways | 68 |
| critical | wrong-oneway-double-way | 76 |
| critical | wrong-one-ways | 1 |
| major | bad-tag-values | 40 |
| major | highway-tag-flip-flops | 2 |
| major | miscategorized-ramps | 25 |
| major | ramp-destination-conflicts | 6 |
| major | speed-limit-value | 457 |
| major | way-sign-posts | 105 |
| minor | cardinal-directions | 5 |
| minor | lane-count | 52 |
| minor | links-with-name-or-ref | 520 |
| minor | misnamed-double-digitized-ways | 13 |
| minor | roundabout-name | 30 |
| minor | smoothness-problems | 72 |
| minor | turn-lanes-order | 1136 |
| minor | typos | 2 |
| Total | 2768 |
Statistics for IC Russelsheim
| Severity | Error name | Cases |
|---|---|---|
| critical | bad-2w-4w-tags | 59 |
| critical | invalid-turn-restrictions | 1 |
| critical | oneway-flip-flops | 1 |
| critical | pierced-tunnels-and-bridges | 1 |
| critical | road-islands | 1 |
| critical | unconnected-ways | 7 |
| critical | wrong-oneway-double-way | 8 |
| major | speed-limit-value | 66 |
| major | way-sign-posts | 33 |
| minor | cardinal-directions | 4 |
| minor | lane-count | 59 |
| minor | links-with-name-or-ref | 55 |
| minor | smoothness-problems | 123 |
| minor | turn-lanes-order | 30 |
| Total | 424 |
Statistics for KR Frankfurt
| Severity | Error name | Cases |
|---|---|---|
| critical | dead-ended one-ways | 18 |
| critical | wrong direction of to member | 2 |
| critical | wrong restriction angle | 4 |
| major | intersection without junction | 4 |
| major | almost-junctions | 33 |
| major | floating islands | 26 |
| minor | already restricted by oneway | 2 |
| minor | mixed layers intersections | 18 |
| Total | 107 |
Statistics for KR Russelsheim
| Severity | Error name | Cases |
|---|---|---|
| major | almost-junctions | 6 |
| minor | already restricted by oneway | 1 |
| Total | 7 |
Our sources
Satellite Imagery: ESRI World Imagery, Mapbox, Bing, Frankfurt am Main aerial imagery 2017, Frankfurt am Main aerial imagery 2016, Maxar etc.
Street-level imagery: OpenStreetCam, Mapillary
Improve OSM - Traffic Flow Direction, Turn Restriction
Local Data: where there is approval to use it
External links
See our Github for more detail on our mapping projects.
See Frankfurt am Main wiki page.