They must do so by law
							                                
                                        
                                    
							                        
                    
                            To help other road users to see them
							                                
                                        
                                    
							                        
                    
                            It helps to keep them cool in summer
							                                
                                        
                                    
							                        
                    
                            The colours are popular
							                                
                                        
                                    
							                        
                     
	 
	