BEND, OR -- The software and hardware in the computers that control signal lights along Highway 97 at the north end of Bend are being upgraded. ODOT’S Peter Murphy says the work begins tonight about 8 o’clock at the signal at Robal and Highway 97. He says when the computer is being upgraded, the traffic signals will switch to flashing red for all directions of traffic. Next Wednesday ODOT will work at Cooley and Highway 97. When the Bend work is finished ODOT will make similar signal light improvements in Redmond.