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 :

• 1. Exhibition
  2. Technical Tours – N.Luzon Expressway & Clark-Subic-Tarlac Expressway
  3. 5th HORA Meeting
  4. 81st & 82nd Council meeting
  5. 12th REAAA General Meeting