If you see green and not blue then it means Go.So when you see green lights flashing then put hazard and slow down to stop before the line.Its always risky to pass after yellow/orange comes up and you are stuck in between line and red lights.So be careful driver!!! (P.S-Putting millions in signal cameras is stupidity and charging on them fines without giving proper training or info to drivers- Welcome to Qatar Traffic Law and Management)