Division 6.3.1 Limit characteristics related to internal noises — measuring methods

Measurements shall be effected under the following conditions:

• the doors and windows must be closed,

• the track must be in good running order, and track characteristics must be specified by the owner-railway,

• the hauled loads must be equal to at least twothirds of the maximum permissible value.

The maximum speed must be maintained for at least 90 % of the measurement time.

The measurement time may be subdivided into several short periods in order to comply with the abovementioned conditions.

The measurement shall be made level with the driver's ear (in the seated position), in the centre of the horizontal surface stretching from the front windowpanes to the rear wall of cabs.