Just past Lake Louise you take a turning onto the Icefield Parkway. It is at this point you loose phone reception and start one of the most amazing drives in the world. For nearly 300km the scenery just takes your breath away. Leave yourself enough time ot do some of the hikes, they are totally worth it. Keep an eye out for wildlife - especially the goats as they like to eat the grit off the road. We did this drive in the fall so saw maybe 5-7 cars on the whole journey. The drive back was interesting as it had snowed (make sure your car is prepared) but it was equally if not more beautiful.