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An important part of upgrades and rehabilitation of tunnels is to protect side area that represent a risk for collisions. The new SMA crash cushions from Automation Manufacturing Services ltd. prove that it is possible to produce space-saving solutions that are easy to install, reliable over time, maintenance friendly and provide a high degree of safety.
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Directive 2004/54/EC on minimum safety requirements for tunnels says the drainage of flammable and toxic liquids shall be provided for through well-designed slot gutters or other measures. In many cases the tunnel operator needs to find space saving solutions in a cross-section with a minimal space for drainage.
To make portal area more traffic safe, there has been a desire to look into systems to prevent icing and snow conditions. This study shows that a snow melting heated pavement system can have promising prospect for application in curtain tunnels.
