Self-energizing drum brakes are a vital part of the braking systems in many vehicles and applications, established by their unique mechanism that enhances braking power through the self-application of force. Their advantages in terms of efficiency, compact design, and reliability in various conditions underscore their continued relevance in automotive and industrial scenarios. As technology advances, further innovations may emerge, but the fundamental principles of self-energizing drum brakes will likely remain a part of braking engineering for years to come. Understanding and appreciating these mechanisms can lead to better vehicle maintenance and performance, ensuring that this classic technology continues to serve effectively in modern applications.