Only on dual carriageways
							                                
                                        
                                    
							                        
                    
                            Roads with a speed limit > 30 mph
							                                
                                        
                                    
							                        
                    
                            Roads with a speed limit ≤ 30 mph
							                                
                                        
                                    
							                        
                    
                            Only in lay-bys
							                                
                                        
                                    
							                        
                     
	 
	