| Traffic signs and signals--Thailand (2) |
| Traffic signs and signals--Thailand--Bangkok (1) |
| Traffic signs and signals--Thailand--Bangkok--Design and construction (1) |
| Traffic signs and signals--Thailand--Evaluation (1) |
| Traffic signs and signals--Thailand--Vipawadi Rangsit Highway (1) |
| Traffic simulation (1) |
| Traffic surveys (1) |
| Traffic surveys--Data processing (1) |
| Traffic surveys--Thailand (1) |
| Traffic surveys--Thailand--Bangkok (3) |
| Traffic violations (3) |
| Traffic violations-Prevention (1) |
| Trafficability (5) |
| Trafficability (2) |
| Trafic flow--Thailand (1) |
| Trails--Thailand--Bangkok--Environmental aspects (1) |
| Training (2) |
| Training needs (2) |
| Training needs--Cambodia (1) |
| Training needs--Sri Lanka (1) |