Contractors installed the signals at the two intersections June 20and will cost about $20,000, Kerr said.
When flashing yellow, left turns are allowed after yielding to oncoming traffic and pedestrians, according to Kerr.
The test locations for the flashing yellow arrows are West Lytle at North Maple Street and West Lytle at North Walnut Street.
The city plans to incorporate the yellow turn signals in future signal upgrades on Rutherford Boulevard that are being paid for with a federal Congestion and Air Quality Mitigation Grant, Kerr said.