MONTPELIER — The chairman of a Vermont Senate committee says there’s no guarantee that a bill will pass out of committee in the coming weeks that would allow immigrant farm workers in the country illegally to get driver’s licenses.

Sen. Transportation Committee Chairman Dick Mazza said Thursday that the bill has a lot of issues that need to be resolved before it can be voted on by the committee and then the full Senate.

The committee took testimony from advocates, and the commissioners of the Vermont Department of Public Safety and the Motor Vehicles Department.

Vermont dairy farms employ an estimated 1,500 Mexican farm workers who say they are isolated in rural areas and have to ask farmers or others for rides to the grocery store or doctor.