STM reduces asset maintenance deficit from CAD4.3 billion to CAD3.8 billion March 2, 2017 | North America News Société de transport de Montréal (STM) has stated that it has invested CAD550 million in 2016 and reduced its asset maintenance deficit from CAD4.3 billion to CAD3.8 bil... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password