OSM SQLite Experiment: Frequency of key highway (elem type n)

These queries show the top frequencies of keys for key (element type )

1 crossing 9,203,284
2 street_lamp 4,019,957
3 bus_stop 3,578,208
4 turning_circle 2,330,331
5 traffic_signals 1,760,154
6 stop 1,720,295
7 give_way 1,081,304
8 motorway_junction 222,195
9 milestone 200,365
10 turning_loop 158,826
11 speed_camera 64,018
12 mini_roundabout 57,042
13 passing_place 51,816
14 emergency_access_point 51,763
15 platform 37,711
16 elevator 36,828
17 traffic_mirror 24,837
18 rest_area 21,631
19 trailhead 11,234
20 emergency_bay 10,889
21 path 6,384
22 toll_gantry 5,754
23 priority 4,063
24 services 3,557
25 speed_display 2,950
26 steps 2,906
27 footway 1,866
28 construction 1,726
29 track 1,559
30 traffic_sign 1,463
31 proposed 1,418
32 cyclist_waiting_aid 514
33 traffic_signals;crossing 282
34 unclassified 259
35 cycleway 241
36 crossover 210
37 fake_speed_camera 172
38 raceway 167
39 hitchhiking 157
40 hitchhiking_bench 124
41 crossing;traffic_signals 108
42 via_ferrata 104
43 tertiary 91
44 road 85
45 living_street 71
46 traffic_calming 71
47 disused 59
48 service 56
49 yes 56
50 pedestrian 51

:-)