The certificates of special equipment operators T 1-T3 are all about elevators (T 1 Elevator mechanical installation and maintenance T2 Elevator electrical installation and maintenance T3 is the elevator driver), but there is no T4.

Operators of boilers, pressure vessels, elevators, lifting machinery, passenger ropeways, large amusement facilities and special motor vehicles in the field (factory) and their related management personnel are called special equipment operators.

Personnel engaged in special equipment operations must undergo training and assessment, and obtain the certificate of special equipment operators before they can engage in corresponding operations. All kinds of certificates of special equipment operators should be reviewed, and the review period is different.