Traffic Signal Housing Materials: Polycarbonate vs Aluminum
Compare polycarbonate and aluminum housings for UV exposure, impact resistance, corrosion, sealing and maintenance.
Project review
Select the enclosure as part of a complete signal-head system. Check the approved drawing, outdoor exposure, gasket design, cable entry, compatible fasteners and service access before production.
Buyer checklist
- UV and colour stability
- Roadside impact and vibration
- Corrosion risk and hardware finish
- Gaskets, drainage and cable entries
Document the agreed configuration in the purchase specification so installers and maintenance teams have a reliable reference.
Browse LED Traffic Light ProductsCompare complete housing configurations
A material name is only the starting point for a purchasing decision. Ask for the exact housing model, dimensions, surface finish, closure arrangement and compatible module. Compare complete assemblies under the same project requirements. Avoid treating a general statement about aluminum or polycarbonate as evidence that a particular signal head meets the required environmental or mechanical specification.
Document the installation environment
Describe the location, exposure to sunlight and rain, nearby marine or industrial conditions, cleaning practices and maintenance access. Ask the supplier which documents apply to the quoted model and which configuration was evaluated. Include the visor, gasket, cable entry and mounting hardware in that review. If the project specifies a protection rating, request supporting evidence for the assembled product rather than assuming that the enclosure material determines the rating.
Check replacement and maintenance fit
For an existing installation, supply photographs of the front, rear, hinge or latch, bracket and product label. Measure the module fixing points and available space with the equipment safely isolated by qualified personnel. Confirm that replacement parts can be identified and ordered consistently. Record the accepted material and finish on the equipment schedule so future replacements follow the same specification.