The DOT approved a request following results of an engineering study.
The study was prompted by a deadly wreck that happened last month. And in addition to that crash, several others have occurred at or near the intersection in recent weeks.
Although installation usually takes up to six months to complete, Cary and the DOT are expediting the process and hope to have the project complete within 60 days.
The signals will be installed on wooden poles and are designed to accommodate cars and pedestrians.
"We believe the signal will be effective in addressing immediate concerns at this intersection, and we appreciate the State's active support and participation," said Town of Cary Engineering Director Tim Bailey.
Green Level to Durham Road and the Cary Glen intersection are owned and maintained by the State, which will install the poles; Cary will pay the estimated $60,000 for the signalization as well as an estimated $50,000 for the corridor study.