Lucia Vega Jimenez (HE'-MEN'-ez) died in hospital in December 2013, days after security guards found her hanging inside a shower stall inside a holding facility at Vancouver's airport.
Weeks earlier, Transit Police stopped her for fare evasion and called Canada Border Services Agency, which arrested Jimenez when a database check showed she had been previously deported from the country.
Transit Police spokeswoman Anne Drennan says the force has discontinued its agreement with the border agency, and an individual must be wanted on an outstanding warrant before officers make a similar arrest.
She says the coroner's inquest that followed the death of Jimenez stimulated discussion and brought the issue to the forefront.
Harsha Walia of Transportation Not Deportation says about 40 community groups backed her organization's demand for change, which believes transit should not be a border checkpoint.
"We're trying to move as much as possible to what we would consider to be fundamental community policing and we believe that this is one of the basic fundamentals of community policing," says Drennan.
"In our case, as Transit Police, we want all persons to be able to access transit regardless of their status, and we think that this directive is making a concerted effort towards that goal."