IES Photometrics & DIALux for Road Lighting (Inputs + Checklist)
Roadway lighting should be verified with photometrics, not wattage charts. This center explains what to request (IES files), what inputs are required (DIALux-ready), what deliverables to expect (report + layout), and how to write RFQ clauses that make bids comparable.
Dónde encaja este recurso
- Úsalo para: road lighting verification (spacing, uniformity, targets) with IES/LDT + simulation.
- Guías recomendadas: Altura y separación de los postes · Comparar presupuestos · CCT/CRI/Ángulo del haz
- Tipos de sistemas relacionados: Todo en uno · Farolas solares · Decorativo · Tipo dividido
- Procurement templates: Kit de solicitud de cotización y presupuesto
Paquetes recomendados
Photometrics and spacing validation should happen before quote comparison.
The 60-Second Rule (Roadway Projects)
A roadway bid is NOT verifiable unless it includes:
1) IES photometric files for the offered optics (not generic)
2) A DIALux-ready input set (road geometry + pole arrangement)
3) A report that shows spacing, uniformity, and glare-related metrics (as applicable)
4) A clear assumption list (mounting height, tilt, maintenance factor, target class)
If any item is missing, spacing claims should be treated as “Unverified / High Risk”.
What an IES File Is (and when it’s mandatory)
An IES file is a standardized electronic photometric data file that describes a luminaire’s light distribution. It is used by lighting software to calculate roadway performance.
When IES is mandatory
- Highways / main roads
- Any project where pole spacing and uniformity are important
- Any project requiring an auditable lighting report
When IES is still recommended
- Streets with mixed traffic and pedestrian conflict
- Large outdoor areas where glare complaints are possible
IES File Acceptance Checklist (Procurement-Ready)
Before using an IES file to justify spacing or compliance, confirm:
A) Correct file identity
- The IES file is provided for the exact offered model and optic
- The optic family / distribution is named clearly (not “all-purpose”)
B) Usability in software
- File imports successfully into DIALux (or other common software)
- No corrupted or missing data blocks
C) Consistency with the quotation
- Luminous flux and input power are consistent with the quoted configuration
- CCT and optic type match the specification (if stated)
D) Traceability
- File naming and revision control are clear (version/date)
- Supplier can provide updated files if optics or LED package changes
If a supplier cannot provide model-specific IES files, treat roadway spacing claims as unverified.
DIALux Intake Form (DIALux-Ready Inputs)
Use these fields in your website form to collect consistent inputs:
1) Project Basics
- País / Ciudad
- Tipo de vía (autopista / carretera principal / vía local / parque)
- Project quantity (estimated)
2) Road Geometry
- Road width (m) and lanes
- Median (yes/no) and median width (if applicable)
- Sidewalk / pedestrian zones (yes/no)
3) Pole Layout
- Disposición de los postes (en un solo lado / escalonada / opuesta / en el centro)
- Pole height (m)
- Arm length / overhang (m)
- Target pole spacing (m) or “optimize spacing”
- Mounting tilt angle (if fixed)
4) Performance Targets (If you have them)
- Target class / requirements (if specified by local authority)
- Priority: higher uniformity vs lower energy vs lower glare
5) Environment & Risk
- Coastal / desert / monsoon / vandal risk
- Dust and soiling severity (light / medium / heavy)
6) Energy & Operation
- Dusk-to-dawn runtime (hours)
- Dimming preference (time-based / PIR boost)
- Required autonomy nights (backup nights)
Attachments (optional but helpful):
- Site drawing, typical cross-section, or reference spacing plan
- Any local lighting requirement document
Project inputs: Download the Project Input Sheet (PDF) o DOCX and send it with your road class, pole height, and target lux/uniformity.
What You Should Receive (DIALux Deliverables)
A “DIALux-ready proposal” should include:
- DIALux report (PDF) showing:
- road geometry, pole arrangement, mounting details
- luminaire model + optic used (IES referenced)
- spacing results and key performance metrics
- Layout summary:
- pole schedule (height, spacing, arm length)
- recommended optic and mounting notes
- Assumption list:
- mounting height, tilt, maintenance factor (if used)
- target class/criteria used (if specified)
- IES file package:
- IES files clearly named for the quoted models/optics
Copy/Paste RFQ Clauses (IES + DIALux)
Clause 1 — IES Photometric Files (Mandatory for Roadway)
Supplier must provide model-specific IES photometric files for the offered optic(s). Generic or “similar model” IES files are not acceptable for spacing validation.
Clause 2 — DIALux-Ready Report Deliverables
Supplier must submit a lighting calculation report that includes:
- road geometry and pole arrangement assumptions
- luminaire model and optic identification (IES referenced)
- spacing and key performance metrics (as applicable)
- revision control (report version/date)
Clause 3 — Assumptions Disclosure
Supplier must explicitly declare:
- pole height, arm length, tilt
- spacing assumptions (or optimized spacing method)
- target class/criteria used (if specified)
- any maintenance factor assumptions
Clause 4 — Bid Comparability Rule
Bids without IES files and a DIALux-ready input/output package shall be labeled “Unverified / High Risk” before price comparison.
Request IES & DIALux Starter Pack
Get the editable starter pack used to standardize roadway lighting proposals:
- Formulario de solicitud de DIALux (rellenable)
- IES acceptance checklist (fillable)
- Deliverables checklist (report + IES package)
- Sample RFQ clauses (copy/paste)
Envíamelo:
- Correo electrónico del trabajo
- País/ciudad
- Tipo y cantidad de carreteras
¿Quieres una rápida verificación de la viabilidad técnica?
Indique la clase de vía, la altura del poste, los valores objetivo de lux y uniformidad, y las hipótesis de PSH para el mes más desfavorable.
Próximos pasos (mantenga su proyecto listo para la licitación)
Asegúrese de que su proyecto de alumbrado público solar cumpla con todas las normas de contratación y de ingeniería.
Plantillas y pruebas
- Centro de guías — dimensionamiento, adquisición, puesta en marcha, mantenimiento, garantía.
- Centro de información para compradores — Elige un escenario y sigue el enfoque basado en la evidencia.
- Compara cotizaciones (en condiciones equivalentes) — Óptica de bloqueo/IES, Wavg, capacidad de la batería (Wh), controlador, garantía.
- Tallas para la temporada de lluvias (mes más lluvioso) — Evite los sistemas fotovoltaicos de tamaño insuficiente y los déficits de tiempo de funcionamiento.
Seleccionar un tipo de sistema
- 🚀 Farolas solares todo en uno
- 🌓 Farolas solares «todo en uno»
- 🛠️ Farolas solares tipo dividido
- 📏 Farolas solares
- ✨ Farolas solares decorativas
- ⚠️ Soluciones específicas (A prueba de explosiones/Híbrido)
Descargar: Hoja de datos del proyecto (lista para licitación)
Utilice esta plantilla para enviar datos sobre el tamaño y solicitar la validación del diseño IES/LDT +.
