This European Standard describes the specific ‘ Design for PRM Use’ requirements for obstacle-free routes applying to infrastructure and the assessment of those requirements. The following applies to this European Standard: - The definitions and requirements describe specific aspects of ‘ Design for PRM Use’ required by persons with disabilities and persons with reduced mobility as defined in the PRM TSI; - This European Standard defines elements which are universally valid for obstacle-free routes. The definitions and requirements of this European Standard should be used for infrastructure applications; - This European Standard only refers to aspects of accessibility for PRM passengers, it does not define general requirements and general definitions; - This European Standard assumes that the infrastructure is in the defined operating condition; - Where minimum or maximum dimensions are quoted these are absolute NOT nominal requirements. This European Standard contains requirements relating to \'Obstacle-free routes\'.