is a low-cost to make users more connected with the real-world traffic light system. It operates on the 5V input with the programmable buzzer and buttons which are connected directly to the GPIO Port. It is a set of 4 traffic lights with colorful LEDs (Red, Green, and Yellow). 

The PiTraffic is designed to help people get started using hardware with the Raspberry Pi by removing many of the traditional roadblocks. It's not always easy to figure out the components to use and how to attach them, but the PiTraffic makes it easy by plugging directly into pre-set positions on the Raspberry Shield Cap.

• No Soldering Required
• Low-Cost Traffic Light HAT
• Buzzer as Roundabout
• 40-pin female header included boosting height for Raspberry Pi

Resources: