Toronto police are cracking down on cyclists who break traffic rules.

The move comes after a woman was struck by a cyclist and seriously injured on Tuesday in Chinatown.

The woman, 55, was transferred to hospital where she remains in serious condition with a fractured skull.

The accident happened at the corner of Dundas Street West and Huron Street. The woman was walking in a crosswalk, according to police.

Police say the cyclist was travelling southbound on Huron when the accident occurred. Huron south of Dundas is a one-way street, open only to northbound traffic.

CBC News cameras visited the intersection on Thursday and shot footage of cyclists travelling in the wrong direction.

Sgt. Brian Bowman of the Toronto Police traffic unit said the accident will cause police to step up enforcement of traffic offences in the coming days.

"It would be wrong if Toronto police didn't take the opportunity to reinforce the rules," Bowman said. "So we're going to pay more attention to this issue in the coming days."

Police issued the 49-year-old cyclist involved in Tuesday's accident a $400 ticket. His name was not released.

Urban cycling consultant Yvonne Bambrick said part of the problem is a lack of education to ensure cyclists understand that they, like cars, must follow the rules of the road.

"We need better public education that puts materials in the hands of people with multiple languages," Bambrick said in an interview with CBC's Matt Galloway on Metro Morning.

"Bikes have not been incorporated into the transportation system in any meaningful way."