SMART, the International Association of Sheet Metal, Air, Rail and Transportation Workers, is one of North America’s most dynamic and diverse unions with 203,000 members. SMART’s members produce and provide the vital services that move products to market, passengers to their destinations and ensure the quality of the air we breathe. We are sheet metal workers, service technicians, bus operators, engineers, conductors, sign workers, welders, production employees and more. With members in scores of different occupations, we advocate for fairness in the workplace, excellence at work and opportunity for all working families.

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SMART has approximately 700 local unions and councils in the United States, Canada and Puerto Rico. The International Union, based in Washington, DC and Cleveland, Ohio coordinates the union’s activity on behalf of the membership. The International also provides resources to affiliated local unions for organizing, bargaining, political action and education, while administering members-only benefits through our affiliated funds. Every five years, delegates to our International Convention gather to elect the International Union’s General President, General Secretary-Treasurer and members of the General Executive Council comprised of representatives from across the broad spectrum of the industries we represent.


SMART is the largest railroad operating union in North America, with more than 500 Transportation Division (TD) locals. The SMART TD represents employees on every Class I railroad, as well as employees on many regional and shortline railroads. It also represents bus and mass transit employees on approximately 45 bus and transit systems and has recently grown to include airline pilots, dispatchers and other airport personnel. Membership is drawn primarily from the operating crafts in the railroad industry and includes conductors, brakemen, switchmen, ground service personnel, locomotive engineers, hostlers and workers in associated crafts. More than 1,800 railroad yardmasters also are represented by SMART TD. The TD’s thousands of bus and transit members include drivers, mechanics and employees in related occupations. Widely recognized as the leader among transportation labor unions, SMART TD sets the pace in national and state legislative activity, collective bargaining, and in efforts to improve safety and working conditions on the railroads and in the bus, transit and airline industries. Through experienced representation and its legislative strength, the SMART TD has been instrumental in the preservation of Amtrak’s national rail passenger network, the enactment of numerous safety laws and the promotion of employee assistance programs. The SMART Transportation Division has been successful in the past and continues to strive for progressive and innovative contracts that ensure excellent wages and benefits and a healthy pension system for the railroad, bus, mass transit and airline employees who have devoted their lives to service those industries. The SMART Transportation Division also continues to lead in efforts to combat drug and alcohol abuse among its members, in the promotion of mass transit and an efficient rail passenger service, and in protecting its members and the public from the unsafe shipment of hazardous materials.


The sheet metal arm of SMART, formerly the Sheet Metal Workers International Association, represents 150,000 members in the sheet metal and related trades.  Our union has a reputation for providing its signatory partners and customers a professionally trained work force that strives to always deliver excellence in workmanship, training, skill and integrity. SMART strives, through its industry’s code of excellence to be honest, trustworthy, productive and reliable for a long-lasting relationship. SMART construction apprentices and journeymen use the newest equipment and training in their day-to-day work. The training SMART members receive is done through a 4-year apprentice program, on the job and extensive classroom training. SMART journeymen continue to advance their skills and certifications utilizing our world class training centers to stay abreast of changes in technology and work practices. SMART members are unique in the construction industry as the only trade that designs, manufactures and installs our own products. These skilled craftspersons take ordinary types of flat metal and make them into specialized products for various duct and ventilation systems, as well as architectural and specialized metal fabrication. Members of the trade are proud of its special distinction: They not only build; they create.

Become a SMART Member

Take the next step on your journey towards a rewarding career. Learn how you can become a SMART member.

Member Voices

Hear about the Union directly from SMART Union members themselves.

Member Stories: Meet Carol Jones

Longtime Amtrak conductor Carol Jones — who is also a local chairperson with SMART-TD Local 1361 out of New Haven, Conn. — shares her story of coming up in the transportation industry and working as a pioneering woman in the passenger rail sector..