There are two main traffic safety problems in tunnels: guidance and emergencies. Driver visibility in tunnels is limited and normal reflective guidance, especially in emergencies, is insufficient.


Temporary lane changes and tube closures can create dangerous traffic situations, and emergency situations require high attention from drivers. Fire, smoke and chemical spills are the most hazardous emergency situations in tunnels. Impaired vision and disorientation can cause disastrous conditions for drivers and passengers trying to flee to safety.



The 3i Traffic product range provides the solution for all possible applications for tunnel in-road guidance and emergency lighting.


Installing 3i LED road markers and using their unique features:

  • Improves driver guidance;
  • Maintains lane separation both inside and on tunnel approaches;
  • Enforces lane discipline;Minimises clipping of curves;
  • Improves guidance in emergencies and increases reliable;
  • and Emergency teams can rely on guidance in smoke conditions and are able to localize fire sources faster.




Intelligent in-road and emergency lighting systems. These systems may complement the overhead lighting or remove the need for it altogether.


  • Fast and easy installation;
  • Low maintenance;
  • Fast identification of faults;
  • No corrosion;
  • Low power consumption;
  • Non sparking, removes electrocution danger:
  • Cable and light devices work reliably in case of fire.


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