The installation began Tuesday and continues today and Thursday, from 9 a.m. to 4 p.m., weather permitting.
Perimeter Center Parkway intersections scheduled to receive the improvements include: the Marriott Hotel entrance, Dunwoody MARTA Station entrance, first Perimeter Mall entrance north of the MARTA station entrance and the 211 Perimeter Center Parkway entrance.
“The traditional three-phase left-turn signals along Perimeter Center Parkway will be replaced with new four-phase flashing yellow arrow displays designed to improve traffic flow by allowing drivers more discretion in turning left,” said Yvonne Williams, president and CEO of the Perimeter Community Improvement Districts, which are a partner in the program.
The new phasing will include the following order: standard red arrow meaning no left-turn movements can be made, steady yellow arrow indicating the left-turn phase is about to end, flashing yellow arrow letting drivers know they can make a left turn after yielding to any oncoming traffic and pedestrians and steady green arrow giving a protected right-of-way to drivers intending to make a left turn.
“These new signals should significantly reduce the time spent waiting on a traffic signal,” said improvement districts Program Manager Jennifer Harper. She also noted a national study shows drivers had fewer crashes with flashing yellow left-turn arrows than with traditional signals.
Harper said the new signals will be monitored after installation and, depending on the results, will be looked at for installation in other areas of the Perimeter business district.