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

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

1 gate 5,127,766
2 kerb 1,072,209
3 bollard 672,944
4 lift_gate 485,352
5 block 158,408
6 cycle_barrier 126,788
7 swing_gate 99,705
8 stile 95,196
9 entrance 88,732
10 cattle_grid 72,489
11 toll_booth 53,230
12 yes 44,907
13 kissing_gate 43,424
14 chain 30,216
15 height_restrictor 19,811
16 sliding_gate 15,483
17 turnstile 14,316
18 fence 10,350
19 wicket_gate 9,322
20 log 8,765
21 jersey_barrier 8,602
22 border_control 7,847
23 hampshire_gate 6,130
24 sally_port 5,742
25 planter 4,014
26 door 3,070
27 wall 3,057
28 debris 3,035
29 full-height_turnstile 2,623
30 bump_gate 2,271
31 motorcycle_barrier 1,115
32 rope 1,076
33 rock 989
34 tank_trap 948
35 spikes 792
36 bus_trap 757
37 bar 719
38 stone 703
39 sump_buster 700
40 ditch 672
41 horse_stile 647
42 sliding_beam 647
43 guard_rail 627
44 collision_protection 541
45 barrier_board 481
46 slide_gate 469
47 tree 467
48 step 409
49 hedge 404
50 fallen_tree 403

:-)