More rush-hour flexible shoulder lanes are being implemented on Ga. 400.

The lanes allowcommuters to drive on reinforced outside roadway shoulders for limited time periods during rush hour. The lanes are currently in morning use southbound between Holcomb Bridge Road and Northridge Road and between Northridge and the North Springs MARTA Station exit. Beginning Friday, afternoon flexible shoulder lanes will be available northbound between the MARTA Station and Northridge and between State Route 120/Old Milton Parkway and Windward Parkway, Georgia DOT officials said in a press release.

The DOT began allowing travel in the southbound shoulder lanes in 2012.  The lanes were well-received, the department said, and did provide some congestion relief during GA 400’s most heavy southbound traffic periods.

Driving on the new northbound flexible shoulder lanes will be allowed between 4 and 6 p.m., Monday through Friday. Driving in the southbound shoulder lanes is allowed between 6:30 and 10 a.m. on weekdays. As with the southbound shoulder lanes, a 45-mph speed limit will be posted for shoulder traffic. Accident or disabled vehicle pull-off sites will be available next to each of the new shoulder lanes.

The department will open another southbound shoulder lane between North Springs MARTA and Abernathy Road later this month or in early November and also expects to open a southbound lane between Mansell Road and Holcomb Bridge and a northbound lane between Abernathy and North Springs MARTA in the future.