Core upgrade contents of the standard: First, comprehensive upgrade of safety protection, adding mandatory requirements for step missing monitoring, handrail speed deviation monitoring, apron plate anti-pinch device, and personnel fall prevention baffle. Public transport escalators must be equipped with double protection of non-operation reversal protection and additional brake, with braking response time ≤0.2s; Second, tightened heavy-duty performance indicators, clarifying that the design service life of public transport heavy-duty escalators is not less than 20 years, the annual operation times are not less than 5 million times, the strength and stiffness requirements of steps, trusses, and drive systems are increased by 30%, adapting to high-load scenarios such as subway stations, high-speed rail stations, and airports; Third, new intelligent operation specifications, clarifying the technical requirements of intelligent frequency conversion, personnel induction start and stop, passenger flow monitoring, and fault early warning system for escalators. It automatically reduces speed or stops during unmanned periods, with an energy saving rate of no less than 40%. At the same time, it standardizes the safety redundancy design of the intelligent system to avoid safety accidents caused by intelligent faults; Fourth, detailed installation and acceptance specifications, unifying the installation process, commissioning requirements, and acceptance items of escalators and moving walks, adding quantitative acceptance indicators for truss installation accuracy, guide rail parallelism, and handrail tension, and clarifying the safety control requirements during the installation process; Fifth, upgraded environmental adaptability requirements, clarifying the waterproof, dustproof, high and low temperature resistance, and UV resistance design requirements of outdoor escalators and moving walks, with a protection grade of no less than IP55, stable operation in the environment of -20℃~60℃, and standardizing the design standards of anti-corrosion and wind load resistance.