There is no universal spacing or mounting height for tunnel LED strips. Begin with the route geometry, intended task and lighting criteria, then evaluate the distribution and obstructions in a representative layout.
Draw the services before drawing the light
Add cable trays, pipes, handrails, niches, doors and equipment projections to the lighting plan. A strip mounted neatly behind services can be easy to install but ineffective at illuminating the walking surface. Pay particular attention to changes in direction and places where a worker moves from a bright area into shadow.
Mark access for replacement and cleaning at the same time. A location that requires removing a service tray for routine maintenance is unlikely to remain economical. Coordinate the mounting arrangement with the people who own adjacent systems before fixing the lighting position.
Compare distributions, not simply positions
Obtain photometric information for the assembly actually proposed, including its diffuser or profile. A bare-strip measurement may not represent the installed light. Evaluate whether the arrangement directs useful output toward the task while keeping excessive brightness out of the normal line of sight.
If continuous strips are used in separate sections, assess the junctions and gaps as well as the middle of each section. A run can look uniform from a distance while leaving a shadow at a door or crossing. Include realistic surface reflectance and a maintenance allowance selected by the designer, rather than relying on clean white walls.
Turn the mock-up into a documented decision
Choose a representative area with at least one difficult feature: an obstacle, bend or service recess. Compare feasible mounting options under the same operating conditions. Record the position, orientation, power arrangement and agreed measurements. Include observations from both travel directions and relevant working positions.
After choosing a layout, identify where the design changes along the tunnel. A straight section may use a repeated detail, while a junction needs separate treatment. Put those exceptions on the drawings so installers do not improvise around them. Confirm that the final mounting method respects the product's bend, support and thermal requirements.
Before freezing the layout
- Show obstructions and the intended illuminated surface.
- Confirm cleaning and replacement access.
- Evaluate junctions, corners and gaps.
- Document the final profile, orientation and support detail.
- Keep mock-up results and exceptional locations with the drawing.
Questions buyers ask
Can I copy the layout from another tunnel?
Use it as a reference only. Geometry, surfaces, operating conditions and lighting duties may differ.
Is one long continuous strip easier to maintain?
Not necessarily. Electrically and mechanically serviceable sections may reduce replacement effort while retaining the required appearance.
Related engineering guides
- Tunnel strip lighting: the system design overview
- Where Tunnel LED Strips Fit—and Where Road Luminaires Are Needed
- Retrofitting Tunnel LED Strip Lighting During Short Work Windows
Technical references
Use the following source alongside the project specification; it does not certify a ZBL product or replace site engineering approval.
