Effective communication is the cornerstone of safe and consensual BDSM practices. The Traffic Light System is a universally recognized method for establishing boundaries during play. 'Green' signifies everything is fine and the scene can continue. 'Yellow' indicates a need for caution, signaling that a partner is nearing their limit or needs to slow down. 'Red' is the universal stop signal, meaning all activity must cease immediately. Implementing these clear verbal cues ensures a safer environment for exploration and builds trust between partners.