NASHVILLE (AP) — State officials expect the already busy driver service centers to get even more crowded over the coming months.

So, voters without a photo ID are encouraged to visit a center to get one.

A new state law will require voters starting in 2012 to show a federal or state government-issued photo ID in order to vote.

The service centers are issuing photo ID cards at no charge to registered voters who do not have one.

The state is working with county clerks' offices to issue such IDs to registered voters over age 60 who have opted to carry a non-photo driver's license.