What is the fine-grained topic of the following text: CER– the Community of European Railway and Infrastructure Companies, EIM – the Association representing rail infrastructure managers in Europe and UNIFE representing the European Rail supply Industry welcome the Commission’s initiative reiterating Europe's commitment to be the global leader in worldwide climate action and acknowledge that it is crucial for policymakers to seize the opportunity to accelerate decarbonisation of the transport sector. Only return the topic.
European rail companies' support for decarbonisation of the transport sector.