An adequate transport network from farm to market is therefore vital to the rural farmer. Products must be brought from fields to the household or village. Once consolidated into a viable load, a family member can bring it to one of the numerous small local markets, usually situated close to a motorable road and hopefully at walking or cycling distance from farms on good tracks and paths. Traders visit these markets or pick-up points and progressively build up a load sufficient to ensure a profit at a more distant market town. In some cases, if roads and weather permit, they will pick up at the farm itself. Alternatively, the farmer might choose to bypass the trader and either walk, cycle, or use whatever public transport there is to get to that market where he hopes he will get the best price and at the same buy cheaply what he needs.
As shown above, a hierarchy of road types support crop and produce marketing systems. Rural road systems comprise the first three levels, from village to market town, and can often, if traffic levels are low and Intermediate means of transport common, link directly with larger towns, as simple earth roads shade into gravel ones. Generally, as roads approach centres of population traffic increases as does the average trip distance, dictating more robust roads. At the same time, roads become more elaborate and expensive and responsibility for them necessarily shifts from the local community, through local government and finally to regional and central government. Normally, rural roads should fall under community or local government control.
At the same time transport costs increase more and more rapidly as we travel backwards on the table above from town to village. Roads worsen, especially in the rainy season. Truck operating costs go up as do overheads as loads may be smaller and the risk of being held up for hours or days due to breakdown or closed roads increases. In some cases, marketing costs may become so high due to poor roads that imported food may become cheaper in urban areas, with disastrous consequences for rural towns and villages, not the least being flight to the cities.
It important to remember that markets are not just about buying and selling. Getting to market also means access to gossip, advice, useful information and of course various products and services often only available in towns. Roads reduce isolation and the poverty associated with it.
Rural roads should never be better than just good enough. Networks become far too extensive to be maintained, when we include the simple tracks and paths feeding the low-volume motorable roads which make up the rural road network. However, the crucial role they play in the food marketing system requires that they be given much more attention than in the past. This means not only more investment, but also more attention to the points raised on this site so that it will not be wasted. In the past too many rural roads were improved at vast expense but without any noticeable impact on mobility.