Request of documentation crediting of the exemption of the duty to take mask to the user persons of the railway

Railway station officers and railway security guards may request, in the exercise of their function of monitoring compliance with the measure adopted by the health authorities consisting of the compulsory use of the mask on public transport, the documentation which accredits the concurrence of any of the causes of exemption from the obligation to wear a mask to those users of the railways who do not wear it.