An adequate transport network from farm to market is therefore vital to the rural farmer. Products must be brought from the field 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 or often on a motorable road and hopefully at walking or cycling distance 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 feels he will get the best price and at the same buy cheaply what he needs.
As shown above, a hierarchy of road types form the basis of 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 IMT common, link 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, the roads becoming more elaborate and expensive, responsibility for them necessarily shifts from the local community, through local government and finally to regional and central government. Normally, rural roads 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 increase as do overheads as loads become 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 getting access to gossip, advice, useful information and of course the various products and services often only available in towns. Roads reduce isolation and the poverty associated with it.
Rural roads can never be better than just good enough. Networks are far too extensive, making up well over 90% of the total as can be seen above, when we include the simple tracks and paths that with the low-volume motorable roads make up the rural road network. However, the crucial role they play in the food marketing system requires that they be given more attention than at present. This means not only more investment, but also more attention to the points raised on this site so that it will not be wasted, as often happened in the past when rural roads were improved at vast expense, but without any improvement in mobility. The costs imposed by poor transport add a significant margin to the prices of basic foods and, by reducing its supply, further drives them up.