It would be better to impose and to set dates, to incentivise by means of investments or, better still, to withdraw investment from those who fail to adapt to the infrastructure projects or who purchase rolling stock that does not use these systems.
Seria melhor impor e fixar datas, incentivar através de investimentos ou, melhor ainda, retirar o investimento a quem não promover a adaptação aos projectos de infra-estruturas ou comprar material circulante que não utilize estes sistemas.