(j) establish common standards for the construction and maintenance of railway facilities; (k) agree on common policies for the manufacture of railway transport equipment and railway facilities; (l) agree to allocate space for the storage of goods transported by railway from each other within their goods sheds; (m) take measures to facilitate thorough working of trains within the Community; (n) facilitate the deployment of railway rolling stock, motive power and related equipment for the conveyance of goods to and from each other without discrimination; (o) endeavour to maintain the existing physical facilities of their railways to such standards as will enable the Partner States to operate their own systems within the Community in an efficient manner; (p) provide efficient railway transport services among the Partner States on a non-discriminatory basis; (q) facilitate joint utilisation of railway facilities including manufacture, maintenance and training facilities to ensure their optimal use; and (r) promote co-operation in the fields of research and exchange of information. ARTICLE 92 Civil Aviation and Civil Air transport 1. The Partner States shall harmonise their policies on civil aviation to promote the development of safe, reliable, efficient and economically viable civil aviation with a view to developing appropriate infrastructure, aeronautical skills and technology, as well as the role of aviation in support of other economic activities. 2. The Partner States shall take necessary steps to facilitate the establishment of joint air services and the efficient use of aircraft as steps towards the enhancement of air transportation within the Community. 66