I have the same issue with firefox, I just manually saved them to disk, renamed the file type to pdf, and then was able to open the file just fine. Quite the hassle though.
I hope TransLink is going with this style of transit maps... much more clean and European. Notice that Sea Island isn't present... sigh. TransLink makes that mistake all the time and they have a few maps on SkyTrains were the WCE stations are floating on water.
They fixed it!
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"Think simple…reduce the whole
of its parts into the simplest terms,
Getting back to first principles"