Traffic control lights There is a sequence to remember when it comes to traffic lights, but what do they mean?  (please note that some crossings work differently and an amber flashing light may appear)   RED means ‘Stop’. Wait behind the stop line on the carriageway RED AND AMBER also means ‘Stop’. Do not pass through or start until GREEN shows. GREEN means you may go on if the way is clear. Take special care if you intend to turn left or right and give way to pedestrians who are crossing. AMBER means ‘Stop’ at the stop line. You may go on only if the AMBER appears after you have crossed the stop line or are so close to it that to pull up might cause an accident. What about amber flashing lights? Pelican crossings are signal-controlled crossings operated by pedestrians. Push-button controls change the signals. Pelican crossings have no red-and-amber stage before green; instead, t...