JORSA
Japan Overseas Rolling Stock Association is an association to promote trade business of railway rolling stock and related materials. It is composed of 29 leading Japanese rolling stock and component manufacturers, and trading firms.
JORSA gladly assists in providing Japanese sate-of-the-art technologies to railway operators and customers throughout the world. (http://www.jorsa.or.jp)

EIM
EIM, the association of European Rail Infrastructure Managers, was established in 2002 to promote the interests and views of the independent infrastructure managers in Europe, following the liberalisation of the railway market. EIM advocates its members’ positions to the European Union institutions and also provides technical expertise to the appropriate European bodies.
http://www.eimrail.org/

International Air Rail Organisation
The organisation was created to bring together people world-wide interested in rail connections to airports. The objective is to share common problems and seek solutions – to be a portal to good practice and expertise for airport railways.
Our mission is to spread world class best practice and good workable ideas.
http://www.iaro.com/index2.shtml

The Community of European Railway and Infrastructure Companies (CER) is the leading European railway organisation. It brings together 70 railway undertakings and infrastructure companies from the European Union, the candidate countries (Croatia, Macedonia and Turkey) as well as from the Western Balkan countries, Norway, and Switzerland. CER is based in Brussels and represents its members’ interests vis-à-vis the European Parliament, Commission and Council of Ministers as well as other policy makers and transport actors. CER’s main focus is promoting the strengthening of rail as essential to the creation of a sustainable transport system which is efficient, effective and environmentally sound. Within this framework, a key priority is the achievement of a more balanced modal split in the transport system, eliminating high external costs to society and improving economic efficiency. In parallel to the railways’ own initiatives for improving the quality of rail services, CER sees mobilising adequate investments in rail infrastructure as a prerequisite for achieving a sustainable modal split. CER’s portfolio covers all policy areas with a potential impact on railway transport offering advice and recommendations to European policy makers. Its interests span the whole spectrum of European transport policy: infrastructure planning, passenger and freight services, public service, the environment, research and development and social dialogue. In close cooperation with its members, CER monitors and evaluates the implementation of policies. In permanent dialogue with policy makers it proposes calibration of legislation to address remaining problems. Two railway companies from outside the immediate European area (Georgia and Japan) have become CER partners, opening up cross-fertilisation opportunities on best practices and lessons learned with other regions.
http://www.cer.be

The American Railway Engineering and Maintenance-of-Way Association (AREMA) was formed on October 1, 1997, as the result of a merger of three engineering support associations, namely the American Railway Bridge and Building Association, the American Railway Engineering Association and the Roadmasters and Maintenance of Way Association, along with functions of the Communications and Signal Division of the Association of American Railroads.
The rich history of the predecessor organizations, each having over 100 years of service to the rail industry, is the legacy of AREMA.
The mission of AREMA is the development and advancement of both technical and practical knowledge and recommended practices pertaining to the design, construction and maintenance of railway infrastructure.
http://www.arema.org