DENVER (AP) -- Tow-truck drivers and the widow of a Colorado Springs tow-truck driver dragged to his death earlier this year are headed to the Colorado Capitol to call for safety changes.

The drivers want to see lawmakers pass a Senate bill that would require tow-truck drivers to affix large stickers to drivers' windows alerting drivers that the vehicle is being towed.

Detra Ferries, the driver who allegedly killed 35-year-old Allen Rose, told police she didn't know Rose was towing her vehicle.

The safe ty bill also creates a new misdemeanor of assaulting a towing-truck operator trying to tow a car.

Drivers say they are sometimes attacked by angry drivers and need more protection.

Finally, the bill requires passing drivers to give tow trucks wider berth.

A Senate committee hears the bill Wednesday afternoon.

(Copyright ©2011 by The Associated Press. All Rights Reserved.)