Montreal's transit system is being accused of systemic discrimination against users with physical disabilities.

Some frustrated passengers are filing a complaint with the province's human-rights tribunal and are demanding a clear plan to improve public transit access for all Montrealers.

The group of 11 complainants says that, under a transport plan adopted in 2008, three metro stations per year were supposed to have been renovated for easier access.

But so far, only four have been converted — leaving the project far behind schedule.

Complainant Laurence Parent says she believes it's time to speak out about Montreal's public transit accessibility "because it's a political" issue.

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Only seven of Montreal's metro stations are wheelchair accessible. (CBC)

The group is encouraging all fellow citizens to join in its fight.

The human-rights complaint also asks for $20,000 in damages per complainant.