Be vocal about it and talk out. I spoke out vocally at my workplace and most of us are now remoting - its on every individual to self-quarantine because relying on force (like the mounties or army) simply isn't reasonable - policing people closely defeats quarantining and those transit resources need to keep going to make sure essential employees can get to work.

That all said I'm curious what Translink's plans are to restrict access to the skytrain.