 
                                    
                            When emergency repairs are needed
							                                
                                        
                                    
							                        
                    
                            When motorways merge
							                                
                                        
                                    
							                        
                    
                            When your brakes have failed
							                                
                                        
                                    
							                        
                    
                            When carrying a dangerous cargo
							                                
                                        
                                    
							                        
                     
	 
	