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City buses became stuck on the ice at Sixth Avenue S.W. on Friday morning. ((Submitted by Tamara Tiessen))

The first snowfall of the season made for a slow morning commute for thousands of Calgarians on Friday.

Several major roadways were bumper-to-bumper with traffic as drivers navigated icy and snowy surfaces for the first time since last spring.

Police said crews have responded to more than 130 accidents since midnight, 11 that involved injuries.

"Seen 3 cars spin out already and we're only 5 min from home," tweeted CBC contributor Julie Van Rosendaal.

Send us your pictures of the first snowfall of the year.

Calgarynewstips@cbc.ca

Near the new 17th Avenue and Sarcee Trail overpass, a school bus skidded into a ditch, a CBC News reporter said.

Some bus routes were diverted around icy roads, including Route 3 to Fish Creek Park and Route 20 up the hill to Rockyview Hospital, Calgary Transit said.

Outside the city, officials are recommending against travel on Highway 1 in the Scott Lake Hill area and from Canmore to Highway 1X.