Skip to content

Latest commit

 

History

History
37 lines (28 loc) · 2.23 KB

sourceMaxspeedCheck.md

File metadata and controls

37 lines (28 loc) · 2.23 KB
Raw

Source Maxspeed Check

This check flags features that contain a source:maxspeed tag that is not constructed following the rules set in the OSM wiki: Key:source:maxspeed.

Live Examples

  1. Way id:24358163 has the value implicit instead of RO:urban as expected for a default maxspeed on an urban road in Romania.
  2. Way id:31362404 has a url instead of one of the following expected: sign, markings or <country_code>:<context>.

Code Review

In Atlas, OSM elements are represented as Edges, Points, Lines, Nodes, Areas & Relations; in our case, we’re are looking at Points and Edges.

The check verifies that all the values for source:maxspeed tags respect the following rules:

  • = sign where the speed limit is defined by a numeric sign
  • = markings where the speed limit is defined by painted road markings
  • = <country_code>:<context> where the speed limit is defined by a particular context, for example urban/rural/motorway/etc., and no maxspeed is signposted

Configurables

The following values can be configured based on country legislation:

  • country_denylist - this expects a list of countries for which the check should not be run; for example UK does not follow the rules of this check;
  • values - a list of defined values besides the zone rule. Current possible options are sign and markings;
  • context.values - a set of possible values that the context can take in the <country_code>:<context> rule
  • country.exceptions - list of exceptions that do not follow the ISO code format; for example, BE-VLG is an accepted value because the region has it's own speed standard;

To learn more about the code, please look at the comments in the source code for the check:
SourceMaxspeedCheck