The12th Conference in Manila was held on November 20-24, 2006. The five-day event recorded the following achievements:
- A well-attended Conference with 600 delegates
- 7 outstanding keynote speakers
- 84 technical papers presented
- Katahira Awards presented to 6 outstanding papers
- Concurrent events successfully held:
- Exhibition
- Technical Tours -N.Luzon Expressway & Clark-Subic-Tarlac Expressway
- 5th HORA Meeting
- 81st & 82nd Council meeting
- 12th REAAA General Meeting