Performance testing under Item 616 is included in the specifications for roadway illumination under Item 610 and high mast illumination under Item 614. Item 616 calls for a 14 day operational test, with 48 hours of constant operation followed by 12 days of operation controlled by photocell. Once the system passes the 14-day test and the contract is accepted, TxDOT will relieve the contractor of maintenance responsibilities.