| Value | Category | 
                                    
                    
                        | 1 | Walk | 
                                    
                    
                        | 2 | Car | 
                                    
                    
                        | 3 | Lorry | 
                                    
                    
                        | 4 | Bus | 
                                    
                    
                        | 5 | Matatu | 
                                    
                    
                        | 6 | Motorcycle | 
                                    
                    
                        | 7 | Bicycle | 
                                    
                    
                        | 30 |  | 
                                    
                    
                        | 97 | Other | 
                                    
                    
                        | 98 | Don't know | 
                            
            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.