Roadway lighting RFQ guide
Light Pole Setback: What to Confirm Before a Roadway Lighting RFQ
A pole can have the right height, arm and luminaire but still be in the wrong roadside location. This guide helps buyers describe setback and the site conditions that must travel with it into the RFQ.
It is a procurement and drawing-brief guide, not a substitute for the authority, roadside-safety, structural or lighting-design review.
The short answer: define the pole-center reference before quoting
FHWA’s roadway-lighting glossary defines setback as the lateral offset of the pole center from the face of the curb or the edge of the travelled way. That makes it a location reference, not a universal safe distance and not a substitute for the complete roadside review.
A useful RFQ says exactly where the dimension starts, marks the pole center on the plan, and attaches the conditions between the road and the pole. Without that context, a supplier may be comparing different reference points or assuming a roadside condition that is not present at the project.
First drawing question
What feature is the datum: curb face, travelled-way edge, shoulder edge, barrier face or another authority-defined line?
First safety question
What roadside conditions affect the location: speed context, slope, utilities, sidewalk, median, clear-zone review or barrier?
First quote question
Is the location fixed by the civil plan, still under review, or a preferred direction for budget pricing?
Setback, horizontal clearance and clear zone are not interchangeable
These terms often appear together in roadway conversations, but each answers a different question. Keeping them separate prevents a small plan dimension from being mistaken for a complete safety conclusion.
| Setback | A lateral pole-center offset from the curb face or travelled-way edge, using the project’s stated reference. |
|---|---|
| Horizontal clearance | A lateral offset from a designated roadway feature to a vertical roadside element; it is an operational clearance concept, not automatically a clear-zone value. |
| Clear zone | The roadside border area intended to be available for safe use by errant vehicles. Its consideration depends on variables such as roadway speed, traffic, slopes and geometry. |
| Pole spacing | The distance between lighting locations along the layout. It is a separate design variable from the lateral pole setback. |
Why a simple offset number is not enough
FHWA notes that desired clear-zone width can depend on traffic volumes, speeds and roadside geometry. Its roadway-lighting guidance also describes the need to place lighting supports so that they do not create a hazard for errant vehicles. The project authority—not a catalogue page—sets the relevant location requirements.
A curb, sidewalk or landscaped strip changes the drawing conversation. So do drainage features, utility conflicts, retaining walls, driveways, public-space furniture, slopes, median width and maintenance access. Treat the pole location as part of the site layout instead of an isolated product dimension.
Roadside and grade
Show shoulder, curb, sidewalk, verge, slope, drainage, finished grade and any changes along the route.
Obstacles and interfaces
Mark utilities, signs, trees, barriers, crossings, equipment cabinets and other features that constrain pole placement.
Lighting and structure
Attach luminaire photometrics, arm geometry, fixture weight/EPA, wind data and the proposed pole arrangement.
Authority path
State the applicable road authority, local standard, tender note, permit condition or safety review that governs the final location.
What to mark on the site plan before RFQ
The following information lets the supplier understand the intended layout without claiming that the preliminary drawing is final.
| Reference line | Identify curb face, edge of travelled way, shoulder edge or another explicitly named datum. |
|---|---|
| Pole center | Show each proposed pole center or a typical cross-section and identify how the setback is measured. |
| Road geometry | Add lane count, median, curve, intersection, crossing, driveway, grade and the relevant dimensions. |
| Roadside conditions | Include sidewalk, verge, slope, drainage, barriers, utility corridor, trees and property/right-of-way constraints. |
| Lighting layout | State one-sided, opposite, staggered or median direction where known, plus the luminaire and arm schedule. |
| Open items | Label authority approval, clear-zone review, breakaway/shielding decision, final foundation and final lighting calculations as open when they are not confirmed. |
When the pole cannot move farther from the roadway
Do not use a generic product choice to resolve a constrained location. The site plan should identify why the position is limited and who owns the next decision. FHWA’s clear-zone guidance describes options such as relocating a pole where feasible and considering mitigation when critical locations cannot be avoided.
For a quotation, the practical step is to share the governing drawing and requirements, then ask what pole configuration, base interface, access condition and documentation are needed for the review. The final approach must be confirmed through the applicable project process.
| Constrained by utilities | Attach utility survey information, conflict location and the responsible coordination party. |
|---|---|
| Constrained by right-of-way | Show the boundary, sidewalk or property condition and any authority direction. |
| Constrained by barrier or median | Identify the barrier, median geometry and the drawing that governs the placement. |
| Constrained by maintenance | Describe available access, lift equipment, traffic-control limitations and the service-side expectation. |
A buyer-ready setback RFQ checklist
Use this list whether the enquiry is for a conventional roadway pole, a decorative streetscape configuration or a multifunctional support.
1. Location
Project country/city, road or area use, site plan and the applicable authority or client specification.
2. Datum
The exact point used for setback measurement and whether the pole center is fixed or indicative.
3. Roadside
Curb, shoulder, sidewalk, slope, drainage, median, barrier, utilities and surrounding constraints.
4. Lighting
Luminaire model, photometrics if available, mounting height, arm reach, tilt, pole arrangement and spacing intent.
5. Structural
Known wind criteria, luminaire EPA/weight, accessory loads, base/foundation interface and any crashworthiness requirement.
6. Commercial stage
Budget quote, review drawing or final production release; identify assumptions that still need authority or engineering confirmation.
Related product and engineering paths
Connect the site-layout brief to the actual pole configuration before treating a quote as final.
Source references
These public FHWA references support the definitions and general roadside-location framing used here. They do not replace the authority requirements or professional review for a specific project.
FAQ
What is light pole setback?
For roadway-lighting discussion, setback is the lateral offset of the pole center from the face of the curb or edge of the travelled way. The project must identify the precise reference point used on its drawing.
Is setback the same as clear zone?
No. Setback is a pole-location dimension. Clear zone is the roadside area intended to allow recovery by an errant vehicle; its review depends on the roadway and roadside conditions. Confirm the applicable authority requirements.
What should a pole setback RFQ include?
Include a site plan, reference point, roadway or area geometry, curb or shoulder condition, slopes, sidewalks, utilities, barriers, pole and luminaire data, material, finish, maintenance access and applicable drawings or authority notes.
Can a pole supplier select the final setback from a product photo?
No. A product photo cannot establish the site datum, road geometry, authority requirements, roadside safety review or final lighting layout. Use the project plan and applicable review process.
Send a Roadside-Layout RFQ
Share the site plan, pole-center reference, roadway edge or curb detail, roadside constraints, lighting layout, luminaire schedule, material, finish, known wind information and authority documents available.
Leave a Reply