| 1 | Transportation Department | #2706 | |
| 2 | Traffic Management Section | #2770－#2780 | 376440000a3521@hchg.gov.tw |
| 3 | Traffic Planning Section | #2730－#2733 | 376440000a3522@hchg.gov.tw |
| 4 | Traffic Facility Section | #2790－#2799 | 376440000a3524@hchg.gov.tw |
| 5 | Traffic Engineering Section | #2710－#2719 | 376440000a3523@hchg.gov.tw |