Beginning on Monday, motorists should expect delays on expressways such as Circle Drive due to street sweeping.  The sweeping will take place on Mondays through Thursdays until May 26th from 8:00pm until 6:00am barring unforeseen circumstances and weather permitting. Motorists are reminded to stay back from the street sweeping vehicles a minimum of 15 meters, and when passing should slow to 60 km/h and use caution. The charge for speeding in a construction zone is double, so driving 20 km/h over the speed limit will cost $440.