In the not-too-distant past rail, the considerations afforded to passengers with mobility issues or those whom require special assistance can sometimes be found lacking. For obvious reasons, having to travel when negotiating steps, stairs and trains that the majority of the travelling public find straightforward can make the idea of using public transport quite daunting.

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http://www.accessibilitynewsinternational.com/apps-badges-and-3d-rendering-steps-being-taken-to-improve-rail-accessibility/