Transit Police still don't have a suspect in relation to Friday's bomb scare.
Spokesperson Anne Drennan says her force has received tips but there is yet to be a break in the investigation.
She says going forward, signs could be placed to warn riders to watch out for suspicious items.
Installing additional cameras is also on the table.
Despite the explosive found near the tracks in Surrey on Friday, she says there hasn't been a noticeable change in ridership.