Kootenay National Park
Flora and fauna plus 2
All visitors stopping in the park (even just for gas) require a park permit. No pass is required if driving straight through. Day passes and annual passes are available.
Additional variable fees are required for camping and backcountry exploration. See the official website for a current schedule.
Highway 93 is the main road in Kootenay, going from Lake Louise at the north end of Kootenay National Park to the Village of Radium Hot Springs at the south end.
Parks Canada Visitor Guide to Kootenay 
Note that, while there is no fee for driving through the park, a pass is needed if stopping within the park, even if for gas. Since Kootenay National Park is contiguous with Banff National Park, if driving north it's advised to check your fuel at the town to Radium as the next non-pass-required gas station is not until Canmore, approximately 160 km away. As there are no gas stations within the park, this is advisable in any event.