The link below is about poor snow removal causing commuters to park off terminal and getting tickets. I have had people tweet about this issue at me as well.
Even when no snow is present,  there are times when the parking lot is full, especially at the Cobequid one.

These issues need to be adressed by #HRM. We are doing our part with a lot of residents using public transit and adjustments by Metro Transit need to be made to keep up.

http://thechronicleherald.ca/metro/1191700-commuter-raps-snowplow-service-at-metro-transit-terminal