Traffic Light Maintenance in Extreme Weather: Inspection Checklist

Heat, Sunlight and Dust

High temperatures and strong sunlight can affect enclosures, cable insulation, batteries and the working environment for maintenance staff. Inspect ventilation paths, seals, mounting hardware and signs of heat-related deterioration.

In dusty locations, keep lenses, solar panels and cabinet ventilation areas clean according to the site maintenance schedule. Do not use a cleaning method that could damage optical surfaces or electrical seals.

Rain, Humidity and Wind

After severe rain or wind, inspect housings, gaskets, cable entries, pole attachments and cabinet doors. Look for water ingress, loose components, damaged connectors or changes in signal alignment.

Where the project requires it, record the condition of surge-protection devices and verify that earthing and bonding arrangements remain intact.

Cold-Weather and Battery Checks

Low temperatures can affect batteries and mechanical components. For solar or portable systems, confirm that the storage system is appropriate for the expected operating environment and inspect it according to the supplier guidance.

Keep a log of inspections, faults, repairs and replaced parts. This helps identify recurring site issues and improves future spare-parts planning.

Routine Inspection Items

• Signal faces, lenses and indications operate as intended.
• Housing seals, doors, fasteners and mounts are secure.
• Cables and connectors show no visible damage.
• Controller cabinet and power equipment are clean and accessible.
• Any fault is recorded, isolated where needed and assigned for repair.