...and the waiting drivers at the other end get irate.
The main road at the end of my short cul-de-sac had roadworks on it (local gas board replacing pipes), and two-way temporary lights were in operation with no lights controlling the exit from the cul-de-sac. Right next to the lights, along with the 'When red light shows WAIT here' board, was one of equal size which said 'Joining traffic not light controlled'. As the road is on a curve, anyone waiting at the junction could not see either of the lights and queue, so it was a case of 'if no one in sight, go and drive with care'. On one occasion, I could see the traffic in one direction disappearing round the curve, so as it was the direction I wanted to go, I went. Of course as I got to the other end, the lights had changed and the first car in the queue was proceeding past the light. He immediately stopped, blocking the way, and got out and walked to my window, berating me for passing the lights at the opposite end when they were on red, saying he had to get to an appointment and I would have to reverse back down. To which I replied that I was 'joining traffic' per the board, that I couldn't care less about his appointment and I could sit here all day. He eventually got the message and reversed to let me out...