| Value | Category | 
                                    
                    
                        | 1 | route goudronnee | 
                                    
                    
                        | 2 | route secondaire | 
                                    
                    
                        | 3 | sentier / piste | 
                                    
                    
                        | 4 | voie d eau (maritime, fluviale, lacustre etc) | 
                                    
                    
                        | 5 | voie ferroviaire | 
                                    
                    
                        | 8 | aucune | 
                                    
                    
                        | Sysmiss |  | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.