Start thinking about what you have to do next. We were sitting at lights one year on a main road but it was a 4 lane but divided by garden centers and so we were ready to cross - Lights changed to Green we were off so was the other car , we got through an wondered why all the others cars were still there. It wasn't our set of Lights it was the set on the other lights. Sooooooo lucky we were not hit by any close crossing traffic.