Ngā kaupapa kua tūtohitia
- City traffic 3 ngā hua
- Roads 3 ngā hua
- Traffic engineering 3 ngā hua
- Transportation 3 ngā hua
- Design and construction 2 ngā hua
- Passenger traffic 2 ngā hua
- Safety measures 2 ngā hua
- Traffic accidents 2 ngā hua
- Traffic safety 2 ngā hua
- Traffic signs and signals 2 ngā hua
- Automobile drivers 1 ngā hua
- City planning 1 ngā hua
- Congresses 1 ngā hua
- Cost of operation 1 ngā hua
- Environmental aspects 1 ngā hua
- History 1 ngā hua
- Mathematical models 1 ngā hua
- Planning 1 ngā hua
- Public opinion 1 ngā hua
- Rating of 1 ngā hua
- Research 1 ngā hua
- Rural roads 1 ngā hua
- Shoulders 1 ngā hua
- Speed limits 1 ngā hua
- Streets 1 ngā hua
- Traffic surveys 1 ngā hua
- Transportation, Automotive 1 ngā hua
- Urban transportation 1 ngā hua
- Width 1 ngā hua