A cycling advocacy group is calling for an enforcement blitz to make sure drivers are respecting new separated bike lanes on Sherbourne St.

The lanes are separated from traffic by a low curb to make cycling safer.

But some taxis and trucks have jumped the curb to pick up passengers or make deliveries.

"I'm noticing that they do that and it completely obstructs the lane," says Andy, a cyclist who uses the new bike lanes.

Angela, also a cyclist, has seen a taxi mount the curb everyday as she makes her way around.

"It's dangerous," she says. "Sometimes you don't have time to stop your bike."

Cycle Toronto, an advocacy group, is calling for a two-month enforcement blitz with officers handing out tickets and information about why its dangerous for vehicles to enter the separate bike lanes.

Jared Kolb, the group's director of campaigns and membership, says the lanes are a great idea but the curbs should be higher or have barriers to prevent vehicles from mounting them.

The city says the curbs had to be designed in such a way to allow emergency vehicles to pull over.