More digital speed signs will be seen around Cobb County.

The Cobb County Board of Commissioners recently approved the Dynamic Speed Display Sign Policy. At $5,000 each, 20 of these permanent signs will be installed on certain two-lane roads for a $100,000 total. The Cobb County Department of Transportation now has seven portable digital speed signs.

Since 2013, Cobb DOT also has been conducting a pilot program with these signs at five permanent locations.

Information: cobbdot.org.

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Inventor Lonnie Johnson stands with his Super Soaker water guns at JTEC Energy on Wednesday, Oct. 29, 2025, in Atlanta. Johnson, a former NASA engineer, is currently working on a new energy technology through his company’s JTEC device that turns thermal heat into usable energy. (Natrice Miller/AJC)