Road Surface R-Table Library for DIALux evo

A technical collection of 102 road-surface reflection tables in the RTable.v1 format for DIALux evo road-lighting calculations.

Library Contents

The repository currently contains 102 RTB files:

• R1 — 25 files
• R2 — 25 files
• R3 — 25 files
• R4 — 25 files
• Additional_RTables — 2 reference files

Complete File Catalog

A searchable technical index containing all 102 R-Table filenames, Q0 values, S1 values, surface classifications, and direct file links is available here: ➡️ View the Complete R-Table Catalog

Technical Format

Each file contains:

• Format: RTable.v1
• 29 tan(epsilon) values
• 20 beta angles
• 580 reflection coefficients
• Beta angle range: 0° to 180°
• tan(epsilon) range: 0 to 12

File naming format:

RST_Rx_Mx_Sx_###.RTB

Example:
RST_R3_M3_S2_068.RTB

Intended Applications

The files can be used for:

• DIALux evo road-lighting calculations
• Road-surface reflection analysis
• Luminance and uniformity comparison
• Pavement-condition sensitivity studies
• Preliminary lighting-design evaluation

Installation in DIALux evo:

• Download the required .RTB file.
• Attache it to the DIALux evo and restart.
• Open the road-lighting calculation settings.
• Select the required road-surface reflection table.
• Verify the selected surface name and Q0 value in the calculation report.

Technical Notice: These files are parameterized engineering datasets intended for simulation, comparison, and research use.

They are not a substitute for project-specific road-surface measurements. Final lighting designs should be validated against actual pavement conditions and applicable project requirements.

Keywords

DIALux evo, R-Table, RTable.v1, road lighting, road-surface reflection, pavement reflection, Q0, S1, R1, R2, R3, R4, luminance calculation