SOLUTION CASE STUDY CLEM JONES TUNNEL (CLEM7) - BRISBANE, QLD BACKGROUND CHALLENGES RESULTS The M7 Clem Jones Tunnel (CLEM7), known during its development as the North-South Bypass Tunnel (NSBT), is a AUD$3.2 billion, 4.8km, toll road built under the Brisbane River, which crosses between the suburbs of Woolloongabba and Bowen Hills in Brisbane, Australia. The CLEM7 consists of two parallel, or twin, tunnels that are approximately 10 meters apart. The two tunnels are connected by 41 cross-passages that are spaced every 120 metres along the entire length of the CLEM7. A major challenge was how to ensure that in an emergency people would be directed to the entrances of the Cross Passage Escape Tunnels, particularly in low visibility such as in the presence of smoke. Adequate huma

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