[Tagging] Red light cameras

[Raphael]

I've looked at the tagging of the nodes with role 'device' of
enforcement=traffic_signals relation in some countries. In all of the
countries i've surveyed except in Canada, highway=speed_camera is the
most popular tag for red light cameras. Some of these
highway=speed_camera are additionally tagged
speed_camera=traffic_signals. In Canada, man_made=surveillance is the
most popular tag.

By the way, there is a relatively large number of
highway=traffic_signals nodes that with the role device, which are
tagging mistakes. (They should have the role 'force' instead.)


Australia

Total                           203
highway=speed_camera            166 (4 with speed_camera=traffic_signals)
man_made=surveillance           4
highway=red_light_camera        0
(highway=traffic_signals)       13


Canada

Total                           176
highway=speed_camera            30 (5 with speed_camera=traffic_signals)
man_made=surveillance           78
highway=red_light_camera        27
(highway=traffic_signals)       41


France

Total                           705
highway=speed_camera            598 (14 with speed_camera=traffic_signals)
man_made=surveillance           62
highway=red_light_camera        0
(highway=traffic_signals)       1


Germany

Total                           609
highway=speed_camera            488 (203 speed_camera=traffic_signals)
man_made=surveillance           11
highway=red_light_camera        0
(highway=traffic_signals)       46


Italy

Total                           213
highway=speed_camera            52 (19 with speed_camera=traffic_signals)
man_made=surveillance           33
highway=red_light_camera        0
(highway=traffic_signals)       95


Switzerland

Total                           137
highway=speed_camera            59 (19 with speed_camera=traffic_signals)
highway=red_light_camera        2
man_made=surveillance           0
(highway=traffic_signals)       36


United States

Total                           139
highway=speed_camera            49 (6 with speed_camera=traffic_signals)
man_made=surveillance           7
highway=red_light_camera        0
(highway=traffic_signals)       47


United Kingdom

Total                           24
highway=speed_camera            13 (10 with speed_camera=traffic_signals)
man_made=surveillance           1
highway=red_light_camera        0
(highway=traffic_signals)       4