City crews continued to make their way through Toronto streets Wednesday, clearing roads blanketed by as much as 20 centimetres from the previous day's snowfall.

Piles of snow quickly became large mounds as the city was hit with its third snowstorm in a week.

Side streets, driveways and parking lots have shrunk in size as people and plows begin to run out of space because of the mounting snow.

"Before I had a double driveway, now I have a single driveway," one man told CTV Toronto while shovelling. "If any more snow falls I'll have half a driveway."

City officials said they are plowing the streets today but will be back this week to actually remove snow and bring it to melting sites set up in the city.

The commute to work was a difficult one Wednesday morning as service disruptions plagued the TTC and roads were a slippery mess from the previous day's storm.

On the TTC, the SRT from Kennedy subway station to McCowan was shut down after experiencing mechanical delays during Tuesday night's storm.

"It was a combination of snow, blowing snow and signal problems," explained TTC spokesperson Danny Nicholson. "There was difficulty getting power from the power rails to motors on the train."

A line mechanic was called to the scene last night but the problems were still not fixed by morning. Nicholson said he didn't know if the problems would be fixed in time for the evening rush.

Hundreds of people crammed into shuttle buses but TTC officials warned commuters there would be significant delays during the morning rush not only because of the SRT but also because of weather conditions.

Highways and main routes were cleared for traffic but many side streets are still snow covered.

Ontario Provincial Police Const. Dave Woodford said motorists still need to be cautious on the roads.

"The sun is out and shining which means it will melt the snow and make the roads wet," he told CTV.ca. "Then we might get some freezing conditions which will turn the wet roads into ice."

As of 4 a.m. Wednesday, Woodford said about 150 accidents were reported to the OPP. Most of them are single-car collisions, he said, where motorists were travelling too fast for the road conditions and ended up in the ditch on the side of the highway.

"The ramps are bad because they're the secondary routes for snow plows," he said. "What happens is that there's a lot of snow accumulation and people drive too fast on them because they're trying to pick up speed and end up wiping out."

On Highway 401, near Avenue Road, one van rolled over onto its roof.

Woodford said none of the accidents have been serious. However, an accident involving a tractor-trailer briefly closed down a section of the highway in the Kitchener area.

So far this month some 82 centimetres of snow has fallen on Toronto, compared with 7.5 centimetres of snow during the same period last year and 18 centimetres in 2005.

With a report from CTV Toronto's Matet Nebres