CHALLENGE IN TERMS OF LIGHTING > Light uniformity > Lay-out restrictions (wall mounting) > Prevent the black hole effect coming from the contrast > Luminaires can create a glare effect
RISK LEVEL
ZONE
DEFINITION
REQUIREMENTS
Area leading to the tunnel entrance
Drivers must be able to identify obstacles
1
Medium
ACCESS
Maintaining the uniformity in luminance between the access area and this zone
2
THRESHOLD Tunnel entrance
High
Second part of the tunnel coming directly after the threshold zone
Progressively reduce the luminance to allow the human eye to adapt
3
Provide the right levels to enable adaptation
Medium
TRANSITION
Interior zone of the tunnel leading to the exit zone
4
High uniformity to ensure safety
Prevent flickering
Low
INTERIOR
Increased luminance level to prepare the human eye to adapt to the brightness outside
Last section of the tunnel
5
Prevent glare
High
EXIT
19
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