Compliance
The International Commission on Illumination (“CIE”) and the European Union (“EU”) provide clear standards and guidelines for lighting in road tunnels. Regulations require active emergency lighting in all road tunnels over 500m and there are special provisions for guidance to allow tunnel users to evacuate the tunnel on foot.
The regulations also indicate that there should be horizontal lighting delineation at the road side edge, emergency exit door marker lights, as well as overhad illuminated lane and variable message signage.
Many Tunnel Authorities are specifying the use of inductively-powered lighting solution as this solution significantly outperform hard-wired systems on the whole of life cost test.
PROBLEM
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.
SOLUTION
Intelligent on-road and emergency lighting systems. These systems may complement the overhead lighting or remove the need for it altogether.
3i APPLICATION BENEFITS
The 3i Traffic product range provides the solution for all possible applications for tunnel on-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 reliability
- Helps emergency teams so they can rely on guidance in smoke conditions and are able to localise fire sources faster
3i TECHNICAL BENEFITS
- 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
Solutions
Our product range provides the solution for all possible applications in tunnel on-road- and emergency lighting.
Our system may be used to complement overhead or sidewall lighting in tunnels, and as a result improve driver visibility. By installing smartstud® or iiilevel™ directly on or into the roadway:
- Driver guidance is improved
- Lane separation both inside and on the tunnel approaches is maintained
- Lane discipline is enforced
- Clipping of curves is minimised
Consequently, disastrous head-on collisions, associated accidents and delays are avoided.
Browse through our comprehensive list of solutions in tunnels below:
Completed installations worldwide
With over 200 tunnel installations worldwide, 3i Innovation is the leading supplier of tunnel on-road lighting systems.
For a case study of one of our selected tunnel projects below, please click on the image.
Centre line delineation
Smartstud® lighting provides high contrast delineation to warn drivers of lane changes and dangerous roadway situations. For example, by installing Smartstud® down the centreline.
Road side delineation
Smartstud® lighting provides high contrast delineation to warn drivers of road limits and shoulders. For example, by installing Smartstud® down the sideline.
Tidal flow delineation
Smartstud® lighting provides high contrast delineation to warn drivers of lane direction changes, closures and dangerous roadway situations. For example, by installing Smartstud® lighting between individual lanes.
Emergency lighting
3i Innovation products with its unique Inductive Power Transfer technology can serve as a backup to primary illumination devices in tunnels and connect to emergency guidance systems.
Fire, smoke, and chemical spills are the most hazardous emergency situations in tunnels. Impaired vision and disorientation can cause disastrous conditions for both drivers and passengers trying to flee a tunnel to safety. A sidewalk lighting system like Smartstud® can efficiently and effectively direct drivers/passengers towards emergency exits and away from the hazard by using pacing lights.
Exit door system
