| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 0 | 
                                    
                                    0%
                                 | 
| -1 | refuse | 1 | 
                                    
                                    0.3%
                                 | 
| 1 | Paved, multi-lane in each direction | 148 | 
                                    
                                    39.6%
                                 | 
| 2 | Paved, single-lane in each direction | 166 | 
                                    
                                    44.4%
                                 | 
| 3 | Gravel, single-lane in each direction | 31 | 
                                    
                                    8.3%
                                 | 
| 4 | Dirt, single lane | 28 | 
                                    
                                    7.5%
                                 | 
| Sysmiss | 675 |