<div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>World-leading </span><a href="http://9news.com.au/technology" rel="" target="" title="technology"><span>technology</span></a><span> is being incorporated into major upgrades to </span><a href="http://9news.com.au/adelaide" rel="" target="" title="Adelaide's"><span>Adelaide's</span></a><span> Heysen Tunnels.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The $150 million project is almost complete, but there will still be some pain for commuters until early next year.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>At the heart of the upgrades is a state-of-the-art automated fire suppression system, capable of spraying water inside the tunnels for up to two hours during a fire. </span></div></div><div><div id="adspot-mobile-medium"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE: </span></strong><a href="https://www.9news.com.au/national/caboolture-queensland-family-of-woman-shot-dead-break-silence/ed9b2f95-7c94-4a6c-8265-fe618b6f77e4"><strong><span>'She didn't deserve this': Shot woman's family hunt for answers</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"(That makes) these the safest tunnels anywhere in the world at the moment, they are over 25 years old and this is about bringing them up to the latest standard," infrastructure and transport department chief executive Jon Whelan said.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Twenty-three new fans have also been installed to improve ventilation and enhance visibility by efficiently clearing fog and smoke, and boom gates have been incorporated as an additional safety measure, enabling the tunnels to be swiftly closed off in emergencies.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The project also includes the installation of 1000 new LED lights, marking the first major lighting upgrade since the tunnels opened in 2000.</span></div></div><div><div class="OUTBRAIN" data-reactroot="" data-src="//www.9news.com.au/national/adelaide-heysen-tunnels-get-160-million-stateoftheart-facelift/428cce64-f6c3-4543-ae63-b29f1e2e4bcd" data-widget-id="AR_5"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Additionally, a public address radio rebroadcast system has been integrated to allow emergency messaging directly to drivers' car radios in case of tunnel emergencies. </span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>While the upgrades are underway, the 55,000 commuters who navigate the construction each day may experience some pain.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Final testing of the new systems is expected to conclude in February.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE: </span></strong><a href="https://www.9news.com.au/world/australian-man-captured-in-ukraine-russian-social-media/c754931b-8fda-4c15-916a-ed9871c7055d"><strong><span>Concerns for Aussie man with 'heart of gold'</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE: </span></strong><a href="https://www.9news.com.au/world/nasa-solar-probe-to-fly-closest-distance-to-sun-ever/a819f725-d7c8-4980-beb7-a86a8bca4089" rel="" target="" title=""><strong><span>NASA probe to fly closer to the sun than ever before</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"We will be releasing some smoke canisters throughout January to test out fire suppression and smoke detection," Transport Minister Tom Koutsantonis said. </span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"So if you see smoke coming out of the tunnels... it's us."</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><em><span>This article was produced with the assistance of </span></em><a href="https://www.9news.com.au/technology/9express/16480c33-636a-461f-9c4f-d0e2522c722a"><em><span>9ExPress</span></em></a><em><span>.</span></em></div></div>