| Value | Category | 
                                    
                    
                        | 1 | On foot | 
                                    
                    
                        | 2 | Animal and Carriage | 
                                    
                    
                        | 3 | Bicycle | 
                                    
                    
                        | 4 | Motorcycle | 
                                    
                    
                        | 5 | Public Transport | 
                                    
                    
                        | 6 | Private Car | 
                                    
                    
                        | 99 | Other (Specify) | 
                                    
                    
                        | 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.