Drivers will have to pay attention to bikers before they open car doors or pay up under a bill moving through the Wisconsin Legislature.

The bill approved Tuesday by the Senate requires drivers to take "due precaution" to ensure opening their doors will not interfere with traffic or endanger any person or vehicle. Violators could be fined $40.

The plan also eliminates a requirement that riders allow three feet between their bike and any vehicle. It is expected to be considered by the Assembly.

Lawmakers introduced the bill after a Madison woman last year fractured a vertebra when a motorist opening a door threw her off her bike. The woman received a $10 citation while she was in the hospital for riding too close to the car.