The Georgia Chamber of Commerce is saying the state needs to seriously ponder its transportation future. A column last week on the organization’s website by Seth Millican, director of the Georgia Transportation Alliance, recalls voters’ overwhelming rejection last July of the Transportation Investment Act vote, or T-SPLOST, as it was more commonly known. Nowhere was the proposed additional 1 percent sales tax for transportation more soundly defeated than in the Georgia Mountains region, which stretches from Hall and Forsyth counties to the state’s northernmost counties, such as Towns, Union and Franklin.