Q: Which colour follows the green signal at a puffin crossing?
        
        
            
                Correct answer:
                
                    Steady amber
                
             
        
            
                Explanation
            
            
                Puffin crossings have infra-red sensors that detect when pedestrians are crossing and hold the red traffic signal until the crossing is clear. The use of a sensor means there's no flashing amber phase as there is with a pelican crossing.