Toronto police have launched a one-week safety blitz to remind residents November is traditionally the most deadly time of the year for pedestrian accidents.

The wetter weather, combined with the darker fall evenings after the switch back to standard time last week, has caused a spike in vehicle-pedestrian collisions, police say.

The colder temperatures means pedestrians are bundled up and wearing more clothing, which could reduce their sight of vision.

In the last week alone, police said two pedestrians have been killed and more than 10 others -- including a mother and daughter who were hit by a police cruiser -- have been injured in accidents.

Police say most collisions occur between 3 and 6 p.m., and within 1.5 kilometres of the victim's home.

Operation "Smart Ped" is also targeting drivers who are not obeying street signs and traffic lights.

"We are all responsible for each other," Const. Barbara Ryan told CTV News on Monday.

"Pedestrians, even if you're crossing on a green light, take an extra second, have a look before you step out onto the roadway .... You want to make sure you're right and you have the right of way."

There have been 17 pedestrian fatalities so far this year. Last year, the city recorded 26 pedestrian fatalities.