| Value | Category | 
|---|---|
| -9 | Don't know | 
| 1 | The network and quality of roads | 
| 2 | Cost and availability of fuel | 
| 3 | Road closures due to strikes and protests | 
| 4 | Time and distance to markets | 
| 5 | Lack of competition in transportation companies | 
| 6 | Availability and quality of transport vehicles |