CALGARY If you drive Highway 901 east of Calgary, get ready to slow down. The provincial highway that had a posted speed limit of 100km/hr has now dropped to 80km/hr once you reach the community of Siksika. “There’s just been so much devastation just regarding the speed limit,” said owner of the Big Chief Trading Post Mona Royal. Royal operates the trading post west of the community along the highway and said there have been so many close calls between motorists and pedestrians, with some incidents resulting in death. The reduction in the speed limit is really good,” she said.