detect nodes with unneeded railway=level_crossing

[mkoniecz]

Variant of #9245 ( detect nodes with unneeded highway=crossing )

Rules:

A - node that may be left by cars in two directions. Naive check: (highway=residential or highway=unclassified or highway=primary or highway=secondary or highway=tertiary or highway=trunk (...))

B - node that may be left by railway vehicles in two directions (railway=*)

This check should find all nodes with railway=level_crossing but failing to pass check A or check B

Example of edit fixing this problem: ​osmwww:browse/changeset/18795103

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2013-11-09 02:35:12
Last Changed Author: Don-vip
Revision: 6381
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2013-11-08 14:41:01 +0100 (Fri, 08 Nov 2013)
Last Changed Rev: 6381

Identification: JOSM/1.5 (6381 en_GB) Windows 7 32-Bit
Memory Usage: 94 MB / 247 MB (31 MB allocated, but free)
Java version: 1.7.0_45, Oracle Corporation, Java HotSpot(TM) Client VM
Dataset consistency test: No problems found

Plugin: OpeningHoursEditor (29854)
Plugin: notes (v0.6)

[Glassman]

Running a validation in this area, ​http://www.openstreetmap.org/#map=19/47.61153/-122.33655, report 116 missing level crossings, one for each node visible on the railway. This is an underground lightrail - with no crossings.

This isn't a big issue - more of an annoyance but would be nice not to have to look to see if there is a problem.

[Klumbumbus]

In 12895/josm:

see #11270, see #9297 - avoid false positive missing railway crossing warnig for combined railway highway ways.

[skyper]

duplicate of #17074?