Solar Energy Keeps Traffic Lights Running Uninterrupted in Sakarya

The Sakarya Metropolitan Municipality has introduced an innovative solution to prevent traffic signal disruptions caused by overheating and power outages at intersection control units. By installing solar energy panels on the power supply system of traffic signal controllers, the municipality aims to ensure uninterrupted operation even during technical failures.

The new system, developed by the Traffic Branch Directorate under the municipality’s Department of Road Maintenance and Infrastructure Coordination, is designed to improve the reliability and safety of traffic signal operations across the city.

In the existing infrastructure, intersection control cabinets are directly exposed to sunlight, causing excessive heat buildup during the summer months. This overheating has occasionally resulted in traffic signal shutdowns, creating potential safety hazards for both motorists and pedestrians.

Sakarya Metropolitan Municipality, traffic lights, solar power system.

Traffic lights, solar power system

 

To address this issue, engineers have installed solar-panel roofs above the control cabinets. These structures provide shade, significantly reducing internal temperatures while simultaneously generating renewable electricity. The solar power produced is stored in battery systems, supplying additional energy to the traffic control equipment.

Thanks to the new solar photovoltaic (PV) system, traffic lights can continue operating on solar energy for up to 18 hours in the event of a power failure. If an outage occurs during the night, the battery backup can keep the system running for approximately seven hours, allowing municipal maintenance teams sufficient time to reach the site and restore the main power supply.

The project is expected to enhance road safety by preventing signal failures at busy intersections, reducing the risk of traffic accidents and improving pedestrian safety. In addition, the solar-powered system lowers electricity consumption and operating costs while providing valuable response time for maintenance crews, particularly in remote districts where repair operations may take longer.