Winnipeg Transit is leading by example with good Open Data practices. They have published their data in GTFS format under the ODC PDDL. The zip file includes a LICENSE file with the full text of the PDDL.
These licensing terms provide absolute clarity to developers who wish to use Winnipeg Transit data.
Yes, you may.
This clear separation of web site terms from data license allows Winnipeg Transit Open Data to
survive in the wild when separated from the web service. Doug Hiebert and his colleagues at Winnipeg Transit have provided an admirable example of Canadian municipal Open Data best practices.
Well done, Winnipeg!