Brake-pad wear
							                                
                                        
                                    
							                        
                    
                            The front wheels spinning
							                                
                                        
                                    
							                        
                    
                            The drive wheels locking
							                                
                                        
                                    
							                        
                    
                            Anti-skid road surfaces
							                                
                                        
                                    
							                        
                     
	 
	