A traffic signal sample is useful only when the project team knows what it is intended to confirm. It may help review visible configuration, dimensions, mounting interfaces, labels, and documents, but it should not be treated as approval for an unspecified production order.
Define the sample purpose
State whether the sample is for visual approval, dimensional review, mounting fit, document review, tender evaluation, or a defined project test. Tie the sample to a configuration reference, drawing revision, and list of acceptance points. A generic product sample cannot validate every option in a multi-item project.
Sample review checklist
- Confirm the signal diameter, aspect layout, symbols, housing arrangement, and mounting reference.
- Compare visible labels, connectors, cable entry, and accessories with the approved configuration.
- Review drawings, manuals, document list, and any required approval record.
- Record comments as accepted, rejected, or pending clarification with a dated reference.
- Identify changes that must be incorporated into the production specification before purchase approval.
Control revisions after review
When the project changes a sample requirement, issue a revised schedule or drawing rather than relying on email wording alone. The final order should refer to the approved configuration and document revision, so that production and receiving teams work from the same instruction.
Include the full system context
For a signal head sample, provide the controller, voltage, bracket, and mounting information that affects compatibility. For a pole or bracket sample, provide the approved installation drawing and structural requirements. The project team should confirm these engineering interfaces separately.
Use the signal head specification checklist before requesting a sample review through GQ Traffic.
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