Core Viewpoint - Multiple metro systems in China are halting the practice of "left walk, right stand" on escalators, emphasizing safety by encouraging passengers to "stand firm and hold on" instead [1][2]. Group 1: Safety Concerns - The shift from "left walk, right stand" to "stand firm and hold on" is primarily driven by safety concerns, as walking on escalators can lead to accidents such as falls [1][2]. - Experts highlight that the design of escalators, which often have a higher step height than regular stairs, increases the risk of accidents when passengers walk or run [2][3]. - Increased passenger flow during peak hours adds to the pressure on escalators, making standing side by side more efficient for capacity utilization [2]. Group 2: Maintenance Issues - Long-term practice of "left walk, right stand" has been found to cause uneven wear on escalator components, leading to higher maintenance costs and potential safety hazards [2]. - The asymmetric loading on escalator chains due to this practice can result in decreased comfort and increased maintenance requirements [2]. Group 3: Public Awareness and Education - Continuous public education and awareness campaigns are essential for changing established habits regarding escalator use [3]. - Various metro systems are implementing measures such as visual and audio reminders to promote safe escalator usage, including prohibiting running and walking [3]. - Industry professionals recommend using multiple channels for safety messaging and conducting regular safety awareness events to educate passengers about escalator safety [3].

Core Viewpoint - Multiple metro operators in China are promoting the practice of standing still on escalators instead of the traditional "keep left, stand right" approach, emphasizing safety as the primary reason for this change [2][3][4]. Group 1: Safety Concerns - The shift from "keep left, stand right" to standing still is primarily driven by safety concerns, as walking on escalators increases the risk of accidents such as falls [2][3]. - The operational characteristics of escalators, including their height and speed, contribute to a higher risk of accidents when passengers walk or run on them [3][4]. - Increased passenger flow during peak hours necessitates a more efficient use of escalator capacity, which can be achieved by having passengers stand side by side [3]. Group 2: Implementation and Communication - Metro operators are implementing various measures to promote the new standing policy, including clear signage, audio reminders, and visual aids to guide passengers [2][3]. - In Beijing, initiatives include the installation of yellow warning lines and footprints on escalators to encourage passengers to stand within safe zones [3]. - Shanghai has removed references to "keep left, stand right" from safety materials and emphasizes the prohibition of walking or running on escalators in its public safety campaigns [4]. Group 3: Industry Recommendations - Industry experts suggest using multiple communication channels, such as broadcasts, posters, and safety weeks, to educate the public about the risks associated with walking on escalators and the benefits of standing still [5]. - Regular safety demonstrations and interactive experiences are recommended to enhance public understanding of escalator safety [5].