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Accessibility in public buses remains a challenge in India, where 2.21% of the population has disabilities, 20% of which are movement-related (Government of India, Census of India 2011, [1]). The current bus step heights (13, 10, and 10 inches) are difficult for those with movement disabilities to climb, especially in the 19 to 22 lakh older buses. Existing mobility devices fail to address public transport needs effectively. This paper reviews existing solutions and introduces a foldable staircase model designed in SolidWorks. Using a four-bar mechanism powered by actuators, the staircase folds and unfolds, reducing stair height to improve access. Four scissor mechanisms, driven by two actuators, manage deployment, solving ground clearance and extension issues. Kinematic simulations and static force analysis using SolidWorks and Ansys ensure safety and functionality. The design aims to significantly enhance public transport accessibility for millions with disabilities.

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Design of a Foldable Bus Staircase for Disabled People

  • 会议论文

  • 发表日期：

    2026年

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  • G. Sai Vikas Kumar,
  • Tanaya Hingwe,
  • A. B. Andhare

摘要

Accessibility in public buses remains a challenge in India, where 2.21% of the population has disabilities, 20% of which are movement-related (Government of India, Census of India 2011, [1]). The current bus step heights (13, 10, and 10 inches) are difficult for those with movement disabilities to climb, especially in the 19 to 22 lakh older buses. Existing mobility devices fail to address public transport needs effectively. This paper reviews existing solutions and introduces a foldable staircase model designed in SolidWorks. Using a four-bar mechanism powered by actuators, the staircase folds and unfolds, reducing stair height to improve access. Four scissor mechanisms, driven by two actuators, manage deployment, solving ground clearance and extension issues. Kinematic simulations and static force analysis using SolidWorks and Ansys ensure safety and functionality. The design aims to significantly enhance public transport accessibility for millions with disabilities.