This part of EN 16186 applies to driver's cabs of interoperable rolling stock. This part of EN 16186 applies to driver's desks installed on the left, on the right, or in a central position in the driver's cab. For OTMs, see EN 14033-1 [3] and EN 15746-1 [4]. This part of EN 16186 defines:- anthropometric data; - visibility conditions from the driver's cab, including forward visibility and the reference positions of line- side signals to be considered; - assessment methods. NOTE Due to railway systems constraints the level of visibility provided to the persons outside the defined anthropometric range may vary. Usually the operators manage the potential restriction of front visibility, if the driver uses extreme seat positions combined with extreme body heights. The occupational aptitude of drivers regarding visibility, whether drivers are in or outside the range of anthropometric data of this standard is outside the scope of this document.