Q: Are the new ID requirements for renewing driver's licenses the same for a commercial driver's license (CDL)?

—Steve Hilsman, Madison

A: People applying for a CDL license also need a CDL application, a medical certification, if required for self-certification code, and a TSA background check for hazardous materials endorsement, if applicable, Susan Sports, spokeswoman for the Department of Driver Services, told Q&A on the News in an email. That's in addition to original proof of identity, Social Security number and two proofs of residency. Additional information can be found at www.dds.ga.gov/Commercial/. CDL applicants and renewals can create a custom document checklist at www.dds.ga.gov.

Q: How can a stock be listed on two different exchanges? I noticed that News Corporation is listed on both the NYSE and the NASDAQ. Is one a non-voting stock and the other one voting stock? Is one common or preferred?

—Lance DeLoach, Thomaston

A: Stocks can be issued on different exchanges for several reasons, but the most common is because of the different classes of stock. Companies can customize variations of stock classes into voting or non-voting shares, common or preferred, and also American depositary receipts (ADR), which facilitate foreign purchases of stock. With those class variations, companies have the ability to offer the stock on different exchanges, foreign and domestic. Companies must meet "all of the exchange's listing requirements and pay for any associated fees," according to Investopedia.com.

Andy Johnston wrote this column. Do you have a question about the news? We'll try to get the answer. Call 404-222-2002 or email q&a@ajc.com (include name, phone and city).