traffic management : 163 phrases in 11 subjects |
Aviation | 71 |
Communications | 3 |
Construction | 1 |
General | 8 |
Information technology | 2 |
Law | 1 |
Metallurgy | 1 |
Natural resourses and wildlife conservation | 2 |
Natural sciences | 3 |
Rail transport | 1 |
Transport | 70 |