The Washington Test of Escalator Safety Devices is a standard testing procedure designed to evaluate and ensure the safety of a variety of escalator equipment. The test simulates the operating environment of escalator systems and is used to evaluate their safety, reliability, and performance. This testing procedure includes a variety of tests, such as a load test, a speed test, a noise test, and a vibration test. The Washington Test of Escalator Safety Devices is divided into two categories: the Washington Escalator Safety Device Test (WEST) and the Washington Escalator Safety Component Test (WEBS). The WEST tests the safety of the escalator system as a whole, while the WEBS tests the performance of individual components, such as the escalator steps, handrails, and safety sensors. The Washington Test of Escalator Safety Devices is required for all escalators in the United States and is conducted by a certified testing facility. The results of the test are used by the escalator manufacturer and safety inspectors to ensure the safety and reliability of the escalator system.