Montreal's regional commuter-rail agency is promising to do better this winter.

Last winter, Agence Metropolitaine de Transport users faced repeated delays due to mechanical and other weather-related problems.

The AMT said it's rolling out new double-decker cars this winter to hold more passengers on its Dorion-Rigaud line.

It has also leased newer locomotives, repaired doors so they won't freeze shut and installed heaters on switches.

The agency admits none of this will prevent all delays but it's also installing technology to improve communication with passengers.